REVIEW AND CONSIDER TRAFFIC SAFETY ENHANCEMENT OPTIONS
FOR RIVER ISLANDS PARKWAY AT THE INTERSECTIONS OF BOSCH AVENUE AND IMPERIAL DRIVE, CIP PS 24-07
CITY COUNCIL REGULAR MEETING | OCTOBER 9, 2023 | ITEM: 5.5 1 RIVER ISLANDS PARKWAY
BACKGROUND:
2 Posted Speed Limit= 40
MPH
Designed asa Major Arterial
conveying 1961 vehicles per
hour at buildout
Designed with 10 traffic
signals and one roundabout
All traffic control devices
have been modelled for
buildout of the River Islands
Development
BOSCH AVENUE
BACKGROUND:
3 Currently Two-Way Stop Control
Current condition matches ultimate configuration
Advanced intersection warning signs and cross traffic warning signs added in 2021
Adjacent intersection conditions
Traffic signal at Sidwell Drive to be installed in 6 months Roundabout at Norbeck Drive installed
No reported collisions
Staff has received complaints from residents regarding the safety of vehicles turning onto River Islands
Parkway from Bosch Avenue
IMPERIAL DRIVE
BACKGROUND:
4 Currently Two-Way Stop Control
Current condition matches ultimate configuration
River Islands Parkway stop control removed and
crosswalk enhancements installed two weeks ago
Adjacent intersection conditions Traffic signals at Somerston Parkway and Dell’Osso Drive installed and turned on two weeks ago
One reported collision, may be due to change in traffic control conditions
Staff has received complaints from residents regarding the safety of pedestrians crossing River Islands
Parkway at Imperial Drive
5 BOSCH AVENUE OPTION 1:
FLASHING BEACONS & LANDSCAPE REDUCTION
Recommended: Adding flashing beacons will enhance the visibility of intersection to drivers on River Islands.
Landscape reduction will improve the sight distance for drivers turning left from Bosch Avenue 6 BOSCH AVENUE OPTION 2:
PROHIBIT LEFT TURNS DURING PEAK HOURS
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
7 BOSCH AVENUE OPTION 3:
ALL WAY STOP CONTROL
Not Recommended:
MUTCD Multi-Way Stop Applications criteria is not
met
Currently no reported collisions at this intersection and All-Way Stop Control can increase collisions on
the major road (River Islands Parkway)
In the future, All-Way Stop Control could cause traffic delays of 1.5 minutes on River Islands Parkway and the
intersection may operate at an unacceptable LOS F
8 IMPERIAL DRIVE OPTION 1:
PEDESTRIAN ACTIVATED FLASHING BEACONS
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 9 IMPERIAL DRIVE OPTION 2:
PEDESTRIAN HYBRID BEACON
Recommended: The Pedestrian Hybrid Beacon is a pedestrian activated signal 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 10 IMPERIAL DRIVE OPTION 3:
ALL WAY STOP CONTROL
Not Recommended:
MUTCD Multi-Way Stop Applications criteria is
not met
All-Way Stop Control will negatively affect the
operation of the adjacent signals on River Islands
Parkway at Dell’Osso Drive and Somerston
Parkway
In the future, All-Way Stop Control could cause
traffic delays of 9 minutes on River Islands Parkway
and the intersection may operate at an
unacceptable LOS F
RECOMMENDATION:
11 Bosch Avenue Imperial Drive
STAFF RECOMMENDS OPTION 1 and/or
OPTION 2:
Option 1: Yellow Flashing Beacons
and Sight Distance Improvement
Option 2: Prohibit Left Turns During
Peak Hours
STAFF RECOMMENDS OPTION 1 and/or
OPTION 2:
Option 1: Yellow Flashing Beacons
Option 2: Pedestrian Hybrid Beacon