For MIXED USE, COMMERCIAL & RESIDENTIAL DEVELOPMENT

View Royal, British Columbia

Prepared for Jeffery Sengara

July 9, 2020

ADDOZ ENGINEERING INC Clients are Our First Priority 125 9 Avenue SE, Suite 2000, Calgary, AB T2G 0P6 Office: (587) 315-3610 Fax: (587) 315-3604 Web: www.addozeng.ca

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TABLE OF CONTENTS

1.0 INTRODUCTION ..................................................................................................................................... 4 1.1 General ................................................................................................................................. 4 1.2 Planned Development ......................................................................................................... 4 1.3 Purpose of Study ................................................................................................................. 4 1.4 Methodologies ..................................................................................................................... 6

2.0 EXISTING CONDITIONS ........................................................................................................................ 7 2.1 Area Road Network ............................................................................................................. 7 2.2 Historical Roadway Traffic Volumes ................................................................................... 7 2.3 Existing Traffic Volumes and Conditions ............................................................................ 9 2.4 Existing Heavy Vehicle Composition ................................................................................. 13 2.5 Planned Roadway Improvements ..................................................................................... 13

3.0 PROJECTED TRAFFIC VOLUMES ...................................................................................................... 14 3.1 Trip Generation for Known Background Developments .................................................... 14 3.2 Historical Traffic Growth Rate ........................................................................................... 14 3.3 Total 2023 and 2033 Background Traffic .......................................................................... 14 3.4 Site Generated Trips ......................................................................................................... 19 3.4.1 Pass-by Trips .................................................................................................................... 19 3.4.2 Internal Trips ..................................................................................................................... 19 3.5 Trip Distribution ................................................................................................................. 20 3.6 Trip Assignment ................................................................................................................ 20 3.6.1 Opening 2023 Volumes (Project Built-Out) ....................................................................... 20 3.6.2 Future 2033 Volumes ........................................................................................................ 20

4.0 EVALUATION AND RECOMMENDED IMPROVEMENTS ................................................................... 25 4.1 Level of Service Criteria for Intersections ......................................................................... 25 4.2 Capacity and Level of Service Analyses ........................................................................... 26 4.2.1 Existing 2020 Unmitigated and Mitigated Conditions ........................................................ 26 4.2.2 Background 2023 and 2033 Unmitigated and Mitigated Conditions ................................. 27 4.2.3 Opening Year 2023 Traffic Conditions .............................................................................. 30 4.2.4 Future 2033 Traffic Conditions .......................................................................................... 31 4.3 Sightline and Sight Distance Review ................................................................................. 31

5.0 CONCLUSIONS AND RECOMMENDEDATIONS ................................................................................ 32

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Appendices:

Appendix A: Project Development Site Plan Appendix B: Existing 2020 Intersection Turning Movement Traffic Counts Appendix C: Synchro - HCM 6th Edition Capacity Analysis Reports

List of Figures

• Figure 1a: Site Location Map ..................................................................................................................... 5
• Figure 1b: Local Context Aerial Map ......................................................................................................... 5
• Figure 1c: Existing Lane Configuration and Control Types ........................................................................ 8
• Figure 2: Observed 2020 Peak Hour Traffic Volumes .............................................................................. 10
• Figure 3: Existing 2020 Peak Hour Traffic Volumes ................................................................................ 12
• Figure 4: Background 2023 Growth Only Peak Hour Traffic Volumes ..................................................... 15
• Figure 5: Background 2033 Growth Only Peak Hour Traffic Volumes ..................................................... 16
• Figure 6: Total Background 2023 Peak Hour Traffic Volumes ................................................................. 17
• Figure 7: Total Background 2033 Peak Hour Traffic Volumes ................................................................. 18
• Figure 8: Direction of Approach and Site Access Distribution .................................................................. 21
• Figure 9: Site Generated Peak Hour Traffic Volumes .............................................................................. 22
• Figure 10: Opening 2023 Peak Hour Traffic Volumes .............................................................................. 23
• Figure 11: Future 2033 Peak Hour Traffic Volumes ................................................................................. 24
• Figure 12: Proposed Background 2033 Intersection Improvements ......................................................... 25

List of Tables

• Table 1: Traffic Volume History along Helmcken Road .............................................................................. 7
• Table 2: Historical 225 Helmcken Road & Observed Counts to Determine Growth Factors .................... 11
• Table 3: Historical 168 Helmcken Road & Observed Counts to Determine Growth Factors .................... 11
• Table 4: Adjacent Highway Heavy Vehicle Composition (in%) ................................................................. 13
• Table 5: Trip Generation Rates – ITE 10th Edition ITE Manual ................................................................ 19
• Table 6: Projected Site-Generated Peak-Hour Volume ............................................................................ 19
• Table 7: Level of Service Criteria for Unsignalized Intersections ............................................................. 25
• Table 8: Level of Service Criteria for Signalized Intersections ................................................................. 25
• Table 9: Capacity Analysis for Existing 2020 Traffic Conditions .............................................................. 26
• Table 10: Capacity Analysis for Existing 2020 Mitigated Traffic Conditions ............................................. 27
• Table 11: Capacity Analysis for Background 2023 Traffic Conditions ....................................................... 27
• Table 12: Capacity Analysis for Background 2033 Traffic Conditions ....................................................... 28
• Table 13: Capacity Analysis for Background 2033 Mitigated Traffic Conditions ....................................... 28
• Table 14: Capacity Analysis for Opening 2023 Traffic Conditions ............................................................ 30
• Table 15: Capacity Analysis for Future 2033 Traffic Conditions ............................................................... 31

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1.0 INTRODUCTION

1.1 General

Jeffery Sengara retained Addoz Engineering Inc. to prepare a traffic impact assessment (TIA) in support of the proposed Mixed Use, Commercial & Residential Development, View Royal, British Columbia. The proposed project will be built on a 19,945 Sq. Ft. lot. The development will be located on the northeastern quadrant of Island Highway and Helmcken Road intersection. This traffic impact assessment is being prepared to assess potential transportation impacts of the proposed development and to satisfy the Town of View Royal requirements for such a study as a result of the proposed development.

Figure 1a presents a site map that shows the general location of the proposed development, and Figure 1b presents a local context aerial map.

1.2 Planned Development

The proposed development will be a 6 storey high building with two underground parking levels. Access to the development will be provided via two access points, one access point on Helmcken Road that would lead to the two parking levels and a second access point on Island Highway that would lead to the commercial parking area. The development will have a total of 59 residential units and 6,336 Sq. Ft. of retail space on the first floor. The proposed site plan is attached in Appendix A of this report.

1.3 Purpose of Study

The primary purposes of this traffic impact assessment study are:

• To evaluate the traffic operations and levels of service (LOS) at the following intersections (please refer to Figure 1):
  • Island Highway and Helmcken Road intersection (Signalized);
  • First Site Access and Helmcken Road intersection; and
  • Second Site Access and Island Highway intersection.
• To evaluate any potential project traffic impacts of the proposed development to the surrounding roadway network, and to determine if the roadways, site accesses and traffic circulations in the project vicinities would be suitable for the intended development and the amount of development traffic volumes anticipated.
• To identify suitable intersection control and geometric configurations that would be required to properly service the proposed development.
• Also, to identify needed short-term and long-term roadway improvements in the areas to enable acceptable traffic operations that would satisfy View Royal’s requirements.

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1.4 Methodologies

This traffic impact assessment utilizes the following evaluation methodologies:

• Data collection including but not limited to existing roadway and intersection geometric characteristic, pavement markings, traffic control types, and intersection turning movement traffic counts.
• The forecast of background peak hour traffic volumes without the site traffic for the 2023 (Opening) and 2033 (Opening + 10 year) horizons.
• Trip generation estimate for the proposed development based on appropriate Trip Generation land use categories and corresponding trip generation rates by the Institute of Transportation Engineers (ITE).
• Distribution of the site generated trips to/from the development site based on population, land uses, roadway network, and existing traffic patterns in the project vicinities.
• Assignment of the project trips to the adjacent roadways based on the proposed project site plan and the estimated roadway trip distribution characteristics.
• Existing, background, Opening and future traffic capacity analysis for the study area intersections and roadways to identify possible capacity constraints and to assess overall traffic impacts of the proposed development, which is based on the latest Highway Capacity Manual (HCM) methodologies by the Transportation Research Board, the US National Academies of Sciences, Engineering and Medicine.

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2.0 EXISTING CONDITIONS

2.1 Area Road Network

There are two roadways providing access to the site as described below. These roadways are Island Highway and Helmcken Road. A brief description of each of these roadways follows.

Island Highway is a two-lane two-way undivided highway that runs in the southeast / northwest directions in the vicinity of the proposed development. Island Highway is a major highway within View Royal with raised median sections east of View Royal Avenue. The speed limit of Island Highway in the vicinity of the proposed development is posted at 50 Km/hr. Bicycle lanes exist on the two sides of Island Highway west of Helmcken Road. However, bicycle lane exist only on the westbound direction east of Helmcken Road.

Helmcken Road is a two-lane two-way undivided roadway that runs in the north / south directions in the vicinity of the proposed development site and intersects with Island Highway. This road connects the areas south of Island Highway to provincial Highway 1 and the areas to the north of Highway 1. The speed limit on Helmcken Road is posted at 40 Km / hr. to the north of Island Highway and posted at 30 Km/hr. to the south of Island Highway.

The intersection of Island Highway and Helmcken Road is a four-leg signalized intersection with exclusive left-turn only lanes on all approaches. The detailed lane configuration for each approach along with the available storage lengths for the right-only and left-only lanes are presented on Figure 1c. The westbound right-turn only lane is channelized with a Yield traffic control sign.

2.2 Historical Roadway Traffic Volumes

The Town of View Royal was contacted to provide their recent counts available for the study roadways. The available recent counts were performed in 2017 at two locations along Helmcken Road. The AM and PM northbound (NB) and southbound (SB) peak hour volumes are presented in Table 1 below.

Table 1: Historical Traffic Volumes along Helmcken Road

Note that the 225 Helmcken Road data was collected from 5/26/2017 9:31:19 AM through 6/5/2017 9:56:21 AM and the 168 Helmcken Road data was collected from 6/23/2017 11:01:12 AM through 7/5/2017 2:21:42 PM. The 225 Helmcken Road is closer to study intersection.

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2.3 Existing Traffic Volumes and Conditions

A field reconnaissance of the site and its surroundings was conducted to establish a database of the existing conditions. The peak period for the proposed residential and commercial Development would typically occur during the weekday morning and the late afternoon periods.

Turning movement traffic count data was collected on Wednesday June 3, 2020 from 7:00 AM to 9:00 AM and from 3:00 PM to 6:00 PM for the a.m. and p.m. peak periods respectively at the following study intersection:

• Island Highway and Helmcken Road Intersection.

The observed AM and PM peak-hour traffic volumes for the above intersection are illustrated on Figure 2. The AM and PM peak hours of traffic occurred from 8:00 AM to 9:00 AM, and from 3:00 PM to 4:00 PM, respectively. Details of the collected traffic count data for the study intersection are contained in Appendix B.

Due to the current COVID-19 conditions the observed traffic would not properly represent the typical volumes in 2020 regular condition. Therefore, Addoz Engineering Inc. utilized the Town of View Royal’s 2017 traffic count data collected along Helmcken Road in order to determine the appropriate factors to estimate 2020 volumes. The historical 2017 traffic counts presented under section 2.2 were utilized.

The process utilized for the estimation is described below:

1. Since the available counts were performed in 2017 an appropriate annual traffic growth factor should be used to determine what these volumes would become in 2020.
2. An annual traffic growth factor of 1.4 % has been utilized that was applied on 2017 data for 3 years to estimate 2020 volumes. Note that this factor has been determine after reviewing Town of View Royal’s Transportation Master Plan (TMP) completed by BUNT & ASSOCIATES that utilized a 1.5% annual growth factor.
3. The following tables were prepared: a. Table 2 presents the traffic volumes related to the 225 Helmcken Road Data. b. Table 3 presents the traffic volumes related to the 168 Helmcken Road Data.
4. These tables present four groups, the first shows the 2017 observed volumes, the second shows the 2020 grown volumes after applying 1.4% growth per year for 3 years, the third presents observed 2020 Helmcken Road volumes collected as part of this TIA, and the last column presented the calculated growth factor.
5. The Growing factors were calculated by dividing the Estimated 2020 Volumes / Observed 2020 Volumes for each peak hour and for each count location.
6. Since the 225 Helmcken Road location is closer to this TIA study intersection, these factors should be used. However, to be conservative the two locations’ factors were averaged and the resulted values were utilized.

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Table 2: Historical 225 Helmcken Road & Observed Counts to Determine Growth Factors

Table 3: Historical 168 Helmcken Road & Observed Counts to Determine Growth Factors

Based on the above table results and discussion, the combined Growth Factors, which are the averages of the factors at the two Helmcken Road Count Locations, are presented below:

AM Average Growth Factor = 1.35 PM Average Growth Factor = 1.21

The above two factors were applied on Figure 2, the 2020 study intersection observed peak hour traffic volumes, to determine the estimated 2020 Existing peak hour traffic volumes, which are presented on Figure 3.

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2.4 Existing Heavy Vehicle Composition

The AM peak hour and PM peak hour heavy vehicle compositions were determined from the intersection turning movement traffic count performed at the study intersection and are presented in Table 4. Note that the sum of Single Unit Trucks and the Tractor Trailer Unit were considered to represent heavy vehicle traffic and their percentages are presented in the below table.

Table 4: Adjacent Highway Heavy Vehicle Composition (in %)

A review of Table 2 indicates that Island Highway as well as Helmcken Road carries low amounts of heavy vehicle traffic. Based on the above results, the capacity analysis for the study intersection utilized the 2020 observed heavy vehicle percentages as noted in Table 4. Noting that for the approaches where the observed percentage was less than 2% a heavy vehicle percentage of 2% was utilized in the capacity analysis software for that approach.

2.5 Planned Roadway Improvements

Town of View Royal was contacted to find out if there are any plans for any roadway improvements within the study area in the near future. The Town provided Addoz Engineering Inc. with their plan for improvements of the Island Highway starting from Helmcken Road to the east. Here is a description of the planned improvements compared to existing conditions for this roadway section:

1. A raised median island separating EB and WB movements will be constructed.
2. Bicycle lane will be installed on the south side of Island Highway for EB direction.
3. Pedestrian sidewalks would continue to exist on both sides of Island Highway but there will be some modifications and portions of the sidewalks will have buffers between the paved roads and sidewalks.
4. Intersection lane configuration will not change.

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3.0 PROJECTED TRAFFIC VOLUMES

3.1 Trip Generation for Known Background Developments

Background traffic takes into account additional traffic on the roadway systems that will be generated by approved developments in the area that may be completed by the time of the site build-out. The current project is projected to be built-out within the coming 3 years. Based on Addoz Engineering Inc.’s discussions with the Town of View Royal staff, there are no approved developments in the vicinity of the project site that are being developed. Therefore, known background development traffic has not been considered for this TIA.

3.2 Historical Traffic Growth Rate

To account for inherited growth in traffic and those traffic generated by other unknown developments that may occur at the build-out of the proposed project, a traffic growth factor was applied to the existing traffic volumes to forecast the future traffic conditions. A 1.4% annual growth rate was used to estimate traffic growth for the 3-year opening horizon as well as the 10-year after opening horizon, which was applied to the 2020 existing traffic volumes to derive the 2023 and 2033 background growth traffic volumes for future development impact analyses. Note that the 1.4 annual growth factor has been determine after reviewing Town of View Royal’s Transportation Master Plan (TMP) completed by BUNT & ASSOCIATES that utilized a 1.5% annual growth factor. The background growth only peak hour traffic volumes for the 2023 and 2033 scenarios are presented on Figure 4 and Figure 5, respectively.

3.3 Total 2023 and 2033 Background Traffic

The background growth due to unknown developments presented on Figure 4 and Figure 5 were added to the existing 2020 peak hour traffic volumes shown on Figure 3, creating the 2023 and 2033 total background traffic scenarios as illustrated on Figure 6 and Figure 7, respectively.

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3.4 Site Generated Trips

To estimate the number of vehicle trips expected to be generated by a development, trip generation rates are applied based on the proposed land uses and intensity. The number of trips that would be generated by a proposed development would be estimated based on the rates published in Trip Generation Manual, 10th Edition by the Institute of Transportation Engineers (ITE). The trip generation rates along with the proposed land uses and the corresponding ITE land use codes are presented in Table 5. The proposed development’s generated trips are presented in Table 6. The Pass-by and internal capture trip generation are discussed in the following subsections.

Table 5: Trip Generation Rates – ITE Trip Generation Manual 10th Edition

Table 6: Projected Site-Generated Peak-Hour Traffic Volumes

3.4.1 Pass-by Trips

Pass-by trips are not new trips, but they are the trips that are attracted from the traffic passing the site on adjacent roadways. While pass-by trips are new trips at the access points to the site, they are not new trips on the adjacent roadway systems. Since the proposed development will include residential and commercial components pass-by trips may be expected for such development. However, to be conservative in this analysis, no reduction for pass-by trips considered.

3.4.2 Internal Trips

An internal trip is a trip that has both its origin and destination within a multi-use development area under investigation, which should be deducted from the total number of trips departing and entering the study site. The appropriate internal trip reduction rates are based on the characteristics of the mixed land uses. Since the proposed development will include residential and commercial components internal trips would be expected for such development. However, since the land use category, ITE #231 was utilized, which is as follows: “Mid-rise residential with 1st-floor commercial are mixed-use multifamily housing buildings that have between three and 10 levels (floors) and include retail space on the first level.” Therefore, internal trip generations have already been accounted for, and therefore, no additional reduction for internal trips required.

3.5 Trip Distribution

The directions from which vehicles will approach and depart a site is a function of several variables, including the population and employment distribution within the development’s area of influence, the operational characteristics of the road system, and the ease with which drivers can travel over various sections of the roadway network without encountering congestion. The directional distribution of new project trips by the proposed Mixed Use, Commercial & Residential Development was estimated based on the consideration of all the pertinent factors above including existing traffic patterns. The resulting directional distributions are as follows:

• 38% of site generated trips will travel to and from the west on Island Highway;
• 46% of site generated trips will travel to and from the east on Island Highway;
• 13% of site generated trips will travel to and from the north on Helmcken Road; and
• 03% of site generated trips will travel to and from the south on Helmcken Road.

The resulting final direction of approach and site access distribution is illustrated on Figure 8.

3.6 Trip Assignment

3.6.1 Opening 2023 Volumes (Project Built-Out)

The projected peak-hour traffic volumes for the proposed Residential and Commercial development were assigned to the adjacent roadways based on the estimated directional distribution as shown on Figure 8. The resulted site generated AM peak hour and PM peak hour trips are illustrated on Figure 9.

The development site-generated trips shown on Figure 9 were then added to the 2023 total background peak-hour traffic volumes shown on Figure 6 to arrive at the Opening 2023 peak hour traffic volumes, which are illustrated on Figure 10.

3.6.2 Future 2033 Volumes

The development site-generated trips shown on Figure 9 were added to the 2033 total background peak-hour traffic volumes shown on Figure 7 to arrive at the Ultimate Future 2033 peak-hour traffic volumes, which are illustrated on Figure 11.

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4.0 EVALUATION AND RECOMMENDED IMPROVEMENTS

4.1 Level of Service Criteria for Intersections

The intersection identified for the study was analyzed according to the methodologies presented in the 2016 Highway Capacity Manual (HCM 6th Edition). The analysis determines the "Level of Service (LOS)" of signalized and unsignalized intersections considering the factors including but not limited to number and types of lanes, traffic volumes, heavy vehicle composition, peak hour factors, pedestrian activities, etc. Levels of service are expressed in a range from "A" through "F," with "A" being the highest level of service, and "F" representing the lowest level of service. Table 7 shows the thresholds for Levels of Service "A" through "F" for unsignalized intersections and, Table 8 presents the LOS criteria for signalized intersections.

**Table 7: Level of Service Criteria for Unsignalized Intersections ***

* Note: Capacity analysis for two-way stop-controlled intersection provides the LOS for the critical movements, not of the overall intersection.

Table 8: Level of Service Criteria for Signalized Intersections

4.2 Capacity and Level of Service Analyses

Capacity and level of service analyses were conducted for the following conditions:

• Existing 2020 Conditions;
• Existing 2020 Mitigated Conditions;
• Background 2023 Conditions (without site traffic);
• Background 2033 Conditions (without site traffic);
• Background 2033 Mitigated Conditions (without site traffic);
• Opening 2023 Conditions (with site traffic); and
• Future 2033 Conditions (with site traffic).

The software package Synchro 10 was utilized for the capacity analyses of all study intersections and site accesses. The Synchro software utilizes Highway Capacity Manual (6th Edition) methodologies for the evaluations.

Note that the observed heavy vehicle percentages and peak hour factors (PHF) were utilized in the capacity analysis of study intersection.

4.2.1 Existing 2020 Unmitigated and Mitigated Conditions

Existing 2020 capacity and level of service analysis results for the study intersection are presented in Table 9. These results were taken from the HCM 6th Edition Un-Signalized Intersection Capacity Analyses Reports produced by Synchro software. The detailed capacity and LOS analyses reports for all analyses scenarios are contained in Appendix C of this report.

Table 9: Capacity Analysis for Existing 2019 Traffic Conditions

A review of Table 9 indicates that the study intersection is currently operating at acceptable levels of service during the AM peak hour. However, during the PM peak hour the westbound is operating at capacity conditions with the volume to capacity ratio (V/C) exceeding 1.0. Therefore, mitigation is needed under existing traffic conditions.

The proposed mitigation is to the optimization of signal cycle length and splits. The AM and PM peak hour Synchro files were optimized utilizing Synchro’s optimization tool and the optimized capacity analyses results are presented in Table 10.

Table 10: Capacity Analysis for Existing 2019 Mitigated Traffic Conditions (Optimized)

A review of Table 10 indicates that the overall intersection operation improved significantly during the PM peak hour as the overall intersection average delays reduced by 23%. Therefore, no further mitigation is needed under existing conditions.

4.2.2 Background 2023 and 2033 Unmitigated and Mitigated Conditions

LOS and capacity analyses results for the background 2023 traffic conditions, without site development generated traffic and with the existing cycle length and split optimization, for the study intersection are presented in Table 11.

Table 11: Capacity Analysis for Background 2023 Traffic Conditions (with Optimization)

A review of Table 11 indicates that intersection operation would deteriorate with the growth of traffic but may still be considered acceptable. Therefore, no mitigation is being considered background 2023 conditions.

LOS and capacity analyses results for the background 2033 traffic conditions, without site development generated traffic and with existing cycle length and split optimization, for the study intersection are presented in Table 12.

Table 12: Capacity Analysis for Background 2033 Traffic Conditions (with Optimization)

A review of Table 12 indicates that intersection operation would deteriorate significantly by 2033 with the increased traffic volumes; also, WB approach would operate at LOS “F”. Therefore, mitigation measures must be considered under the background 2023 conditions.

Suggested Mitigations for the Background 2033 Conditions:

1. Convert the WB left-turn only lane to a shared through/left lane
2. Convert the currently EB left-turn only lane to become a receiving through WB lane
3. Convert the currently EB Through only lane to become an EB Left-turn only lane
4. Convert the currently EB right-turn only lane to become a shared through/right lane
5. Construct a receiving downstream EB through lane to receive traffic from the now shared through/right lane

An illustration diagram of the above suggested improvements is presented on Figure 12. The capacity analyses results for the Background 2033 mitigated traffic conditions are presented in Table 13.

Table 13: Capacity Analysis for Background 2033 Mitigated Traffic Conditions

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A review of Table 13 indicates that the study intersection of Island Highway and Helmcken Road would improve significantly with the suggested intersection improvements and would operate at acceptable levels of service. Therefore, no additional mitigation would be needed under background 2033 conditions.

4.2.3 Opening Year 2023 Traffic Conditions

LOS and capacity analysis results for the Opening 2023, Built-Out traffic conditions with site development traffic, for the major study intersection and proposed site access intersections are presented in Table 14.

Table 14: Capacity Analysis for Opening 2023 Conditions (With Existing Optimization)

A review of Table 14 indicates that the study intersection of Island Highway and Helmcken Road would continue to operate at levels of service comparable to those observed under Background 2023 conditions without site traffic. No mitigation is being considered under Opening 2023 scenario.

A second review of Table 14 with concentration on the site access intersection operations indicate that the two proposed site access intersections would operate at acceptable levels of service during the AM and PM peak hours of traffic. Therefore, no mitigations would be needed at these new intersections. Note that Addoz Engineering Inc. is assuming right-in/right-out for site Access A1 on Island Highway as a raised median will be constructed on Island Highway. However, for Access A2 on Helmcken Road, all movements are considered allowed.

4.2.4 Future 2033 Traffic Conditions

LOS and capacity analysis results for the future 2033 traffic conditions, with site development traffic and the recommended background 2033 improvements, are presented in Table 15 for the major study intersection and the proposed site access intersections.

Table 15: Capacity Analysis for Future 2033 Conditions (With Background Mitigation)

A review of Table 15 indicates that all study intersections would operate at acceptable levels of service under this scenario. Therefore, no further mitigation would be need under the future 2033 traffic conditions.

4.3 Sightline and Sight Distance Review

Island Highway eastbound and westbound approaches to/from the proposed Site Access A1 were reviewed in the field to make sure no obstructions exist. The review covered approximately more than 175 metres to the east and more than 300 metres to the west of the site access intersection. The available sight distance east of Site Access A1 to/from the access point is 140 metres. Also, the available sight distance west of Site Access A1 is 240 metres. It should be noted that the minimum sight distance required to be available as per 2017 TAC standards for site access intersections is 125 metres.

Helmcken Road northbound and southbound approaches to/from the proposed Site Access A2 were reviewed in the field to make sure no obstructions exist. The available sight distance to the north of Site Access A2 is approximately 85 metres. Also, the available sight distance south of Site Access A2 is 165 metres. The minimum sight distance required to be available as per 2017 TAC standards for site accesses on this type of road is 83.5 metres.

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5.0 CONCLUSIONS AND RECOMMENDEDATIONS

This study analyzed the traffic impacts of the proposed Mixed Use, Commercial & Residential Development to be located in View Royal, British Columbia. The proposed project will be built on a 19,945 Sq. Ft. lot. The development will be located on the northeastern quadrant of Island Highway and Helmcken Road intersection. The estimated number of total site generated trips entering and exiting the development would be 18 trips during the AM peak hour and 22 trips during the PM peak hour. The following conclusions have been reached by this traffic impact assessment study:

• LOS and capacity analyses indicated that under the Existing 2020 traffic conditions, the study intersection of Island Highway and Helmcken Road located is currently operating at acceptable level of service during the AM peak hour and unacceptable level of service during the PM peak hour. Therefore, mitigations at this intersection are needed under existing 2020 conditions.

• The suggested mitigation is the optimization of signal cycle length and splits. The AM and PM peak hour Synchro files were optimized utilizing Synchro’s optimization tool and the optimized capacity analyses results for existing mitigated conditions indicated acceptable operations.

• Background 2023 without the Project Site Traffic LOS analyses indicated that the study intersection would continue to operate at acceptable levels of service but with increased delays as a result of traffic growth. Traffic operation still considered acceptable and hence no mitigations would be needed under background 2023 conditions.

• Background 2033 without the Project Site Traffic LOS analyses indicated that the study intersection would deteriorate significantly and WB approach would operate at LOS “F”. Therefore, mitigations to this intersection must be considered under this scenario.

• The proposed intersection improvements to mitigate the unacceptable operations are listed below (refer to Figure 12 for graphical illustration):

  1. Convert the WB left-turn only lane to become a shared through/left lane
  2. Convert the currently EB left-turn only lane to become a receiving through lane for the new WB shared through/left lane
  3. Convert the currently EB Through only lane to become an EB Left-turn only lane
  4. Convert the currently EB right-turn only lane to become a shared through/right lane
  5. Construct a receiving downstream EB through lane to receive traffic from the now shared through/right lane

• Background 2033 Mitigated conditions without the Project Site Traffic LOS analyses indicated that the study intersection would improve significantly and all approaches would operate at acceptable levels of service with the proposed improvements. Therefore, no additional mitigation would be needed.

• Future 2033 with Full Project Site Traffic LOS analyses indicated that the study intersection would continue to operate at acceptable levels of service with background 2033 mitigations. Also, all site access intersections would operate acceptable. Therefore, no additional mitigations would be needed under future 2033 conditions.

• As part of this TIA, a sightline and sight distance review was completed for the proposed access points on Island Highway and Helmcken Road. The results of the review indicated that the available sight distances to/from both site access points meet TAC requirements. Therefore, no sightline issues would be expected.

In summary, this traffic impact assessment concludes that the proposed Mixed Use, Commercial & Residential Development will have some impact on the traffic operations of the future road network. However, this impact will be alleviated by implementing the improvements recommended above.

Yours truly,

ADDOZ ENGINEERING INC

Prepared by:

Emad Alsaidi, PhD, PEng, PE Direct Phone: (587) 703-5222 Or (587) 703-9321 E-mail: ealsaidi@addozeng.ca Web: www.addozeng.ca