On July 18, 2009, about 2:50 p.m., at West Portal Station, San Francisco, California, San Francisco Municipal Railway Transit System (MUNI) L Line train 1433 struck the rear end of standing MUNI K Line train 1407. The operators of both trains and 46 passengers were taken to hospitals. The operator of the striking train and 27 of the passengers had serious injuries. The incident was not affected by weather; it occurred as the trains were just exiting a tunnel. Estimated damages were $4.5 million.