Metro Foothill Gold Line crossing gates snarl traffic. Faulty part that was recalled worldwide blamed for malfunctions. There are 14 at-grade crossings throughout the 5 cities along the new extension: Arcadia, Monrovia, Duarte, Irwindale and Azusa (has two stations). Arcadia has only one at-grade crossing, but some cars were stuck at the crossing for 5 minutes or more. Each of the cities is working closely with Foothill Gold Line Construction Authority to synchronize traffic signals with train crossings to improve traffic flow.