We have run out of free passes.
Riding transit helps to reduce traffic congestion and greenhouse gas emissions, and we appreciate your interest in taking the bus.
You can still get a great deal with our Buy One Get One Free pass program. Buy the first 20-Ride Tri Delta Transit pass and get a second, free pass, compliments of 511 Contra Costa.
Ride 4 Free passes made available with funding from Contra Costa Transportation Authority and the Bay Area Air Quality Management District.