Terms: Drivers (161000000), pilots (28900000), driver (205000000), pilot (115000000), operator (94200000), operators (82600000),
Terms: Bus driver (4670000), bus drivers (2070000), busdrivers (1830), intercity bus drivers (191), transit bus drivers (1080), local transit bus drivers (29), charter bus driver (285),
Terms: driver training (2380000), driver licensing (419000), pilot training (1600000), pilot licensing (1720), operator training (755000), operator licensing (58100),
Terms: busdriver qualifications (8), bus driver standards (63),
Terms: boat captains (185000), boat drivers (42100), boat steersman (7), ships captain (41900), ship's pilot (12700), boat's pilot (222),
Terms: motorcoach drivers (471), school bus driver (563000), school bus drivers (335000), schoolbus drivers (453),
Terms: motor vehicle operator files (13), motor vehicle operator's record (15), motor vehicle operator program (7),
EPA Records Schedule 641 - Motor Vehicle Operator Files
Bus drivers - http://stats.bls.gov/oco/ocos242.htm
Terms: automobile drivers (116000), truck drivers (3130000), truck driver (5720000), van drivers (126000), van driver (383000), pickup truck drivers (890), car drivers (1140000),
Terms: airline pilots (802000), airline drivers (35), taxi drivers (1640000), taxicab drivers (65200), cab drivers (560000), train operators (318000), train drivers (224000), airplane drivers (248),
Terms: flight attendants (2170000), bus attendants (484), train attendants (838), station attendants (166000),
Terms: emergency vehicle drivers (695), operators of church vehicles (2), operators of recreational vehicles (27), fire engine drivers (55), chauffeurs (1270000),
Terms: fleet management (2600000),
Terms: unions (46100000), trade associations (4300000), professional associations (4770000),
Terms: commercial drivers license (153000), commercial driver's license (485000), drivers license (3980000), driver's license (25900000),
Terms: Motor Vehicle Operator (134000), Motor Vehicle Operator License Identification Act (9),
Terms: postal service driver (37), DHL driver (114), USPS driver (21), UPS driver (127000), FedEx driver (1470),