In the Bay Area, commuters celebrated the opening of the new fourth bore of the Caldecott Tunnel on Saturday, November 16. The new tunnel will improve connections between Oakland and eastern Contra Costa County communities. Safety tests were completed before the new tunnel opened. The fourth bore will feature the latest designs in tunnel safety, on top of the safety features in place inside the existing three bores. Said features helped drivers escape to safety and first responders to reach the tunnels quickly during a recent fire in one of the existing bores.