Diamond Bar Traffic and Transportation Commission meetings are typically held on the 2nd Thursday of every month at 7 p.m. and are open to the public. Residents are encouraged to addess the Commission on matters relating to traffic and transportation.
For more information, contact the City's Public Works Department at 909.839.7040 or email at PublicWorks@ci.diamond-bar.ca.us
Keep in mind, meetings are sometimes cancelled, so double check with the city to ensure accuracy.