Its contract with Bombardier calls for 35 cars to be delivered by the end of the year, but at this point BART has received just 10, and problems discovered during testing have already led to delays in delivering the rest of the cars.
Detroit's M-1 streetcar launch delayed until spring '17
Updated federal safety regulations is the main culprit for the delay, in addition to weather and the timetable for delivery of M-1's streetcars.