A down electric commuter train "tripped" past a signal showing stop at the down end of Roseville platform into the section occupied by the preceding train. After recharging the brake air supply, the driver proceeded at above a cautious speed (40 mph rather than 15 mph) and came into violent collision with the train ahead. At the same time an up train was passing and hit the emergency brakes but came into contact with the telescoped cars of the initial collision, tearing the sides of that train away. There were no cases of serious injury to passengers on the three trains.
