REVIEW AND CONSIDER TRAFFIC CALMING OPTIONS
FOR JOHNSON FERRY ROAD AND THE INTERSECTION OF
THOMSEN RD /WARFIELD RD
CITY COUNCIL REGULAR MEETING | OCTOBER 10, 2022 | ITEM: 5.5 1 JOHNSON FERRY ROAD
BACKGROUND:
2 Current Speed Limit 25 mph between Colonial Trail and Loganberry Way
30 mph between Colonial Trail and Golden Spike
Trail
On July 11, 2022, City Council directed staff to
install an All-WayStop at the intersections of
Forty NinerTrail andVictorianTrail
Receiving continued concerns about vehicle
speeds
JOHNSON FERRY ROAD
EXISTING CONDITIONS:
3 Street Cross Section Installed All-Way Stop @ Forty Niner Trail 4 Street Cross Section Johnson Ferry Rd & Forty NinerTrail Intersection JOHNSON FERRY ROAD OPTION 1:
REMOVE STOP SIGNS & REDUCE LANE WIDTHS
Recommended: Reducing the traveled lane widths is an effective solution to reduce vehicle speed. A reduction of lane width from 18’ to 10’ should result in a reduction of speed of 6.6 miles per hour (Highway Capacity Manual) 5 Street Cross Section Johnson Ferry Rd & Forty NinerTrail Intersection JOHNSON FERRY ROAD OPTION 2:
KEEP STOP SIGNS AND REDUCE LANE WIDTHS
Not Recommended: MUTCD Section 2B.04.05 states “Yield or Stop signs should not be used for speed control” JOHNSON FERRY ROAD OPTION 3:
REDUCE SPEED LIMIT TO 25MPH
6 Not Recommended: Speed limits are not enforceable by Lathrop Police unless they are established using the 85th percentile speed established by an Engineering and Traffic Study. The current 85th percentile speed for this road is 30 mph, which is the same as the existing posted speed limit.
THOMSEN RD & WARFIELD RD
BACKGROUND:
7 Current speed limit is 25 mph for both
Thomsen Road &Warfield Road
Two-way stop control
Concerns about the safety of
movements onto and across Thomsen
Road fromWarfield Road
THOMSEN RD &WARFIELD RD
THOMSEN RD
THOMSEN RD & WARFIELD RD
EXISTING CONDITIONS:
8 Thomsen Road and Warfield Road Intersection
THOMSEN RD & WARFIELD RD OPTION 1:
INSTALL INTERSECTION SIGNAGE
9 Thomsen Rd and Warfield Rd Intersection
Recommended: Warning
signs will better alert drivers
along Thomsen Road of vehicles
turning or going across from
Warfield Road
THOMSEN RD & WARFIELD RD OPTION 2:
INSTALL ALL-WAY STOP CONTROL
10 Thomsen Rd and Warfield Rd Intersection
Not recommended: Increase
traffic average delay, vehicles
emissions, speeding, noise, and
frequency of rear-end accidents.
May direct vehicles to adjacent
residential streets.
RECOMMENDATION:
Lane width reduction has been proven to
reduce vehicle speeds
o City of Fremont received the 2021 ITE
Transportation Achievement Award for
increasing traffic safety and reducing vehicle
speeds through lane width reduction
o A lane width reduction from 18’ to 10’ should
reduce the average vehicle speeds by 6.6 miles
per hour according to the Highway Design
Manual 11
JOHNSON FERRY RD THOMSEN RD &WARFIELD RD
STAFF RECOMMENDS OPTION 1:
REMOVE STOP SIGNS AND REDUCE LANE
WIDTHS
Signs will warn drivers on Warfield Rd
that cross traffic does not stop
Signs will warn drivers on Thomsen
Road that they are approaching an
intersection
STAFF RECOMMENDS OPTION 1:
INSTALL INTERSECTION SIGNAGE