OPERATION 12.2.9 CHECK EFFECT OF WHEEL BRAKES Drive the machine at a speed of 20 km/h (12.4 mph) on a dry flat concrete road surface, and check that the stopping distance is less than 5 m (16.4 ft). 12.2.10 CHECK SOUND OF HORN AND BACKUP ALARM 12.2.11 CHECK FLASHING OF LAMPS, CHECK FOR DIRT AND DAMAGE 12.2.12 CHECK ENGINE EXHAUST COLOR AND SOUND 12.2.13 CHECK OPERATIONS OF GAUGES 12.2.14 CHECK PLAY OF STEERING WHEEL, CHECK OPERATION OF STEERING 12.2.15 CHECK DIRECTION OF REAR VIEW MIRROR, CHECK FOR DIRT OR DAMAGE 12.2.16 CHECK LOCK OF CAB DOOR FOR MACHINES EQUIPPED WITH CAB 2-31