Summary

Traffic safety changes approved

San DimasSep 17, 20252 min read

At a glance

Quick context to catch up fast.

The committee approved multiple traffic fixes, including new red curbs, school pickup sign changes, added pedestrian timing, and minor revisions to several event traffic plans.

Committees mentioned

Open the committee coverage hubs tied to this summary.

Traffic Safety Committee

Topics discussed

TransportationPublic Safety

View official document

Was this summary helpful?

Your feedback helps us prioritize what to improve next.

What this means

Several resident-requested safety changes were approved, mainly around intersections, school pickup areas, and sight-line concerns. The committee also directed staff to send letters, coordinate with schools and property owners, and seek additional enforcement in some locations. For events, multiple traffic control plans were approved with minor revisions so street closures and detours can be managed more safely. One item near Amelia Ave and Gladstone will add 1 second to pedestrian crossing time and a second warning sign for southbound traffic.

Key decisions

Follow the major takeaways from this briefing.

Added red curb locations at Portola & Basilio and Coronado & Basilio to improve turning safety.
Requested a letter to LA County about the Valley Center Ave & Arrow Hwy traffic impact study; protected left-turn phasing was noted as warranted for eastbound and westbound Arrow Hwy.
Recommended new signage at Shull Elementary for TK pickup, with updated passenger loading limits and a 7-minute adjacent curb limit.
Asked staff to contact an HOA about vegetation at Kelsey Road & Bidwell Road and request additional enforcement.
Kept current drop-off enforcement at SDHS Covina Blvd, but added a red curb near the staff parking lot exit driveway.
Directed removal of part of the trees at Paseo Alondra and Camino Del Cerritos within 2 weeks and asked for an additional traffic exhibit.
Approved red curb installation on Avenida Entrada near 1703 Avenida Entrada to help bus turning and student drop-off traffic.
Approved with minor revisions the traffic control plans for the San Dimas Beer and Wine Walk, LA Tri Series Triathlon, Runnin Scared 5K, Halloween Spooktacular, San Dimas Community Foundation HEROES Veteran’s Day Event, and the San Dimas High School Parade Application.
Added 1 second to the existing Leading Pedestrian Interval timing at Amelia Ave and Gladstone and added a second R10-15 sign.
Advised cautious use of the westerly parking lot entrance at Trader Joe’s on Cienega Ave when congestion occurs.

Timeline & follow-ups

Action items flagged by the community.

No follow-ups have been shared yet. Add one in the community board below.

Meeting information

Details and records from this meeting.

Traffic Safety Committee Meeting

Sep 17, 2025, 4:30 PMTRAFFIC SAFETY COMMITTEE, MEETING AGENDA, WEDNESDAY SEPTEMBER 17, 2025 9:30 AM, SAN DIMAS COUNCIL CHAMBER CONFERENCE ROOMcompleted

Agenda

Shari Garwick (Director of Public Works), Steve Barragan (Engineering Manager, Public Works Dept.), Esau Ramos (Manager, Maintenance Yard), Deputy Martinez (San Dimas Sheriff’s Department), Detective Gasparyan (San Dimas Sheriff’s Department), Ruben Perales (Traffic Engineer), Rose Lee (BUSD Manager of Special Assignments), Genevieve Amaro (Management Aide, Public Works Dept.)
Decision: COMMITTEE MEMBERS
09-25-01- Corner of Portola & Basilio/ Coronado & Basilio Turning onto Basilio Request from Resident, to review the following two intersections of Portola & Basilio and Coronado & Basilio 09-25-02- Valley Center Ave & Arrow Hwy turn indicators at Signal Request from Resident, to review the intersection of Valley Center Ave and Arrow Hwy 09-25-03- Signage at Shull Elementary and TK Pickup Times Request from Resident, to review current signage for TK Pickup Times 09-25-04- Kelsey Road & Bidwell Road turning onto Bidwell Request from Resident, to review perceived line of sight concern 09-25-05- SDHS-Covina Blvd east of main exit at school entrance & time limit for drop off Request from BUSD, to review current drop off signs and consider time limit for drop off 09-25-06- Paseo Alondra at Camino Del Cerritos Line of Sight Request from Resident, to review recently planted trees and perceived line of sight concern 09-25-07-Eastbound Avenida Ladera onto Northbound Avenida Entrada Line of Sight Request from Resident, to review perceived line of sight concern 09-25-08 San Dimas Beer and Wine Walk Event Request from San Dimas Chamber, to review TTCP 09-25-09 LA Tri Series Triathlon Event Request from Applicant, to review TTCP 09-25-10 Runnin Scared 5K Event Request from Staff, to review TTCP 09-25-11 Halloween Spooktacular Event Request from Staff, to review TTCP 09-25-12 San Dimas Community Foundation HEROES- Veteran’s Day Event Request from Applicant, to review TTCP
Decision: DISCUSSION ITEMS
07-25-05 San Dimas High School Parade Application Request from BUSD, to review TTCP
Decision: CONTINUED ITEMS