Broad Channel is a required transfer to the Rockaway shuttle, which goes to the western half of the Rockaway peninsula. The crowds can be both large and rowdy, filling the platforms from edge to wall, said a transit police officer patrolling an A train. Even when taking into account an estimated 2,700 daily transfers at the station, Broad Channel still has one of the highest rates in the system at two incidents per 100,000 trips.