ITEM 5. 5
CITY MANAGER' S REPORT
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
ITEM: REVIEW AND CONSIDER TRAFFIC SAFETY
ENHANCEMENT OPTIONS FOR RIVER ISLANDS
PARKWAY AT THE INTERSECTIONS OF BOSCH
AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
RECOMMENDATION: Council to Consider Options for Traffic Safety Enhancement for River Islands Parkway at the
Intersections of Bosch Avenue and Imperial Drive,
CIP PS 24- 07
SUMMARY:
Staff has received complaints from residents regarding the safety of vehicles turning onto River Islands Parkway from Bosch Avenue. In December 2021, City staff responded to resident complaints by removing some landscaping as well as installing several warning signs to improve the safety of this intersection. However, the residents are now requesting stop control on River Islands Parkway.
Staff has also received complaints from residents regarding the safety of pedestrians crossing River Islands Parkway at Imperial Drive. Staff recently replaced the all- way stop control with two- way stop control and an enhanced pedestrian crossing over River Islands Parkway to facilitate the function of the newly installed adjacent traffic signals at Dell' Osso Drive and Somerston Parkway.
Staff evaluated these intersections utilizing the California Manual on Uniform Traffic Control Devices ( MUTCD) and provided three Options to enhance the traffic safety as listed below and detailed in the Background Section of this Report.
River Islands Parkwa& Bosch Avenue
Option 1 - Yellow Flashing Beacons and Sight Distance
Improvement
Option 2 - Prohibit Left Turns
Option 3 - Install Temporary All- Way Stop Control
CITY MANAGER' S REPORT PAGE 2
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS FOR
RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
River Islands Parkwav & Imperial Drive
Option 1 - Yellow Flashing Beacons
Option 2 - Install Pedestrian Hybrid Beacon
Option 3 - Install Temporary All- Way Stop Control
Staff recommends that Council consider Option 1 and/ or Option 2 for both Bosch Avenue and Imperial Drive, however staff will proceed with Council' s elected options accordingly.
BACKGROUND:
The City of Lathrop established the Traffic Calming Program to address and resolve local neighborhood traffic concerns. This program provides traffic calming measures that can reduce traffic speed, motor-vehicle collisions, and improve safety for pedestrians, cyclists, and motorists. The funds allocated for the Traffic Calming Program will be unitized towards improving River Islands Parkway at Bosch Avenue and Imperial Drive. If Option 2 for Imperial Drive is selected, staff will bring an item back to Council to approve a CIP and budget given the high cost.
City staff has received complaints from residents regarding the safety of vehicles turning on to River Islands Parkway from Bosch Avenue. In December 2021, City staff responded to resident complaints by removing some landscaping as well as installing several warning signs to improve the safety of this intersection. The residents are now requesting stop control on River Islands Parkway.
Staff has also received complaints from residents regarding the safety of pedestrians crossing River Islands Parkway at Imperial Drive. Staff recently replaced the all- way stop control with two- way stop control and an enhanced pedestrian crossing over River Islands Parkway to facilitate the function of the newly installed adjacent traffic signals at Dell' Osso Drive and Somerston Parkway.
Staff evaluated these intersections utilizing the California Manual on Uniform Traffic Control Devices ( MUTCD). There have been no reported collisions at the River Islands Parkway and Bosch Avenue intersection and one reported collision that may have been caused by the recent change in traffic control at the River Islands Parkway & Imperial Drive intersection. The following options are being presented to Council for review and consideration:
CITY MANAGER' S REPORT PAGE 3
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS FOR
RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
River Islands Parkway & Bosch Avenue
Oution 1 - Install Yellow Flashing Beacons to the Intersection Warning Signs on River Islands Parkway and Further Reduce Landscaping to Improve Sight Distance
Approximate cost is $ 2, 000)
Recommended: This will allow for enhanced warning of an intersection to vehicles traveling on River Islands Parkway and increase the visibility of vehicles turning from Bosch Avenue Option 2 - Prohibit Left Turns from Bosch Avenue to River Islands Parkway during Peak Traffic Hours
Approximate cost of $ 500)
Recommended: Prohibiting left turns from Bosch Avenue to River Islands Parkway from 6 AM - 9 AM and 3 PM - 6 PM will encourage residents to use the adjacent stop controlled or roundabout intersections during the peak traffic hours to ensure safe egress from the neighborhood
Option 3 - Install Temporary All- Way Stop Control until the Adjacent Sidwell Drive Traffic Signal is installed
Approximate cost of $ 6, 000)
Not Recommended:
o MUTCD Section 2B. 07 Multi- Way Stop Applications criteria is not met
o Currently no reported collisions at this intersection and AllWay Stop Control can increase collisions on the major road River Islands Parkway)
o
In the future, All- Way Stop Control will cause traffic delays of 1. 5 minutes on River Islands Parkway and the
intersection will operate at an unacceptable LOS F
CITY MANAGER' S REPORT PAGE 4
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS FOR
RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
River Islands Parkway & Imperial Drive
Option 1 - Install Pedestrian Activated Yellow Flashing Beacons to Pedestrian Crossing Warning Signs
Approximate cost is $ 8, 000)
Recommended: The flashing lights will provide an enhanced warning to vehicles that a pedestrian is crossing River Islands Parkway while maintaining the flow of traffic necessary for the proper function of the adjacent traffic signals
Option 2 — Install Pedestrian Hybrid Beacon
Approximate cost of $ 400, 000)
Recommended: The Pedestrian Hybrid Beacon is pedestrian activated and will stop traffic on River Islands Parkway with a red light. Once the pedestrian has cleared the intersection, the light will go dark to allow traffic on River Islands Parkway to flow as needed to maintain the proper function of the adjacent traffic signals
Option 3 — Install Temporary All- Way Stop Control until Option 1 or 2 can be installed or traffic delays are observed by staff Approximate cost of $ 6, 000)
Not Recommended:
o MUTCD Section 2B. 07 Multi- Way Stop Applications criteria is not met
o All- Way stop control will negatively affect the operation of the adjacent signals on River Islands Parkway at Dell' Osso Drive and Somerston Parkway
o In the future, All- Way Stop Control will cause traffic delays of 9 minutes on River Islands Parkway and the intersection will operate at an unacceptable LOS F
Staff recommends that Council consider Option 1 and/ or Option 2 for both Bosch Avenue and Imperial Drive. However staff will proceed with Council' s elected options accordingly.
REASON FOR RECOMMENDATION:
The intersections of River Islands Parkway at Bosch Avenue and Imperial Drive have some challenges that require enhanced safety improvements. The recommended Options in the Summary above will improve the safety within these intersections.
CITY MANAGER' S REPORT PAGE 5
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS FOR
RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
FISCAL IMPACT:
Staff estimates the approximate construction costs below for all the options for the two intersections:
River Islands Parkway & Bosch Avenue
Option i - Yellow Flashing Beacons and Sight Distance
2, 000
Improvement
Option 2 - Prohibit Left Turns 500
Option 3 - Install Temporary All- Way Stop Control 6, 000 River Islands Parkway & Im erial Drive
Option i - Yellow Flashing Beacons 8, 000
Option 2 - Install Pedestrian Hybrid Beacon 400, 000
Option 3 - Install Temporary All- Way Stop Control 6, 000 Staff will pursue the option selected by Council, develop construction documents, and secure bids for the project. Sufficient funds have been allocated in FY 23- 24 approved budget, CIP PS 24- 07 Traffic Calming Measure fund ( 3310) for all options except River Islands Parkway & Imperial Drive Option 2; if this Option is selected, staff will bring an item back to Council to approve a CIP and budget given the high cost.
CITY MANAGER' S REPORT PAGE 6
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS FOR
RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
ATTACH M ENTS:
A. Bosch Avenue Option 1: Install Yellow Flashing Beacons to the Intersection Warning Signs on River Islands Parkway and further Reduce Landscaping to Improve Sight Distance
B. Bosch Avenue Option 2: Prohibit Left Turns from Bosch Avenue to River Islands Parkway During Peak Traffic Hours
C. Bosch Avenue Option 3: Install Temporary All- Way Stop Control until the Adjacent Sidwell Drive Traffic Signal is Installed
D. Imperial Drive Option 1: Install Pedestrian Activated Yellow Flashing Beacons to Pedestrian Crossing Warning Signs
E. Imperial Drive Option 2: Install Pedestrian Hybrid Beacon F. Imperial Drive Option 3: Install Temporary All- Way Stop Control until Option 1 or 2 can be installed or the traffic volume exceeds the capacity of the all- way stop
CITY MANAGER' S REPORT PAGE 7
OCTOBER 9, 2023 CITY COUNCIL REGULAR MEETING
REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS FOR
RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24- 07
APPROVALS:
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Brad T lor Date
City Engineer
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Cari James Date
Finance Director
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Michael King Date
Assistant City Manager
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Salvador Navarrete Date
City Attorney
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St en J. Salvatore Date
City Manager
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