Transportation Specialist Series GS-2101

Transportation Clerk and Assistant Series* GS-2102

Transportation Industry Analysis Series* GS-2110

Railroad Safety Series* GS-2121

Motor Carrier Safety Series* GS-2123

Highway Safety Series* GS-2125

Traffic Management Series* GS-2130

Freight Rate Series* GS-2131

Transportation Loss and Damage Claims

Examining Series GS-2135

Cargo Scheduling Series** GS-2144

Transportation Operations Series GS-2150

Dispatching Series** GS-2151

Air Traffic Control Series* GS-2152

Air Traffic Assistance Series* GS-2154

Marine Cargo Series* GS-2161

Aircraft Operation Series* GS-2181

Air Navigation Series* GS-2183

Aircrew Technician Series* GS-2185

Transportation Student Trainee Series GS-2199