The Metropolitan Transportation Authority (MTA) is reminding motorists that the Automated Camera Enforcement (ACE) program fines became effective on four more bus routes on Thursday, Nov. 13 i.e. on the Q6, Bx20, Bx3 and Bx7 bus routes and vehicles improperly using busways and bus lanes, blocking bus stops, or illegally double parked will receive summonses that start at $50 and escalate to $250 for repeat violators.