| PSC |
Name |
| AT11 |
Highways, Roads, and Bridges Basic Research |
| AT12 |
Highways, Roads, and Bridges Applied Research and Exploratory Development |
| AT13 |
Highways, Roads, and Bridges Advanced Development |
| AT14 |
Highways, Roads, and Bridges Engineering Development |
| AT15 |
Highways, Roads, and Bridges Operational Systems Development |
| AT16 |
Highways, Roads, and Bridges Management and Support |
| AT21 |
Human Factors Concerning Transportation Basic Research |
| AT22 |
Human Factors Concerning Transportation Applied Research and Exploratory Development |
| AT23 |
Human Factors Concerning Transportation Advanced Development |
| AT24 |
Human Factors Concerning Transportation Engineering Development |
| AT25 |
Human Factors Concerning Transportation Operational Systems Development |
| AT26 |
Human Factors Concerning Transportation Management and Support |
| AT31 |
Navigation and Navigational Aids Basic Research |
| AT32 |
Navigation and Navigational Aids Applied Research and Exploratory Development |
| AT33 |
Navigation and Navigational Aids Advanced Development |
| AT34 |
Navigation and Navigational Aids Engineering Development |
| AT35 |
Navigation and Navigational Aids Operational Systems Development |
| AT36 |
Navigation and Navigational Aids Management and Support |
| AT41 |
Passenger Safety and Security Basic Research |
| AT42 |
Passenger Safety and Security Applied Research and Exploratory Development |
| AT43 |
Passenger Safety and Security Advanced Development |
| AT44 |
Passenger Safety and Security Engineering Development |
| AT45 |
Passenger Safety and Security Operational Systems Development |
| AT46 |
Passenger Safety and Security Management and Support |
| AT51 |
Pipeline Safety Basic Research |
| AT52 |
Pipeline Safety Applied Research and Exploratory Development |
| AT53 |
Pipeline Safety Advanced Development |
| AT54 |
Pipeline Safety Engineering Development |
| AT55 |
Pipeline Safety Operational Systems Development |
| AT56 |
Pipeline Safety Management and Support |
| AT61 |
Traffic Management Basic Research |
| AT62 |
Traffic Management Applied Research and Exploratory Development |
| AT63 |
Traffic Management Advanced Development |
| AT64 |
Traffic Management Engineering Development |
| AT65 |
Traffic Management Operational Systems Development |
| AT66 |
Traffic Management Management and Support |
| AT71 |
Tunnels and Other Subsurface Structures Basic Research |
| AT72 |
Tunnels and Other Subsurface Structures Applied Research and Exploratory Development |
| AT73 |
Tunnels and Other Subsurface Structures Advanced Development |
| AT74 |
Tunnels and Other Subsurface Structures Engineering Development |
| AT75 |
Tunnels and Other Subsurface Structures Operational Systems Development |
| AT76 |
Tunnels and Other Subsurface Structures Management and Support |
| AT81 |
Transporting Hazardous Materials Basic Research |
| AT82 |
Transporting Hazardous Materials Applied Research and Exploratory Development |
| AT83 |
Transporting Hazardous Materials Advanced Development |
| AT84 |
Transporting Hazardous Materials Engineering Development |
| AT85 |
Transporting Hazardous Materials Operational Systems Development |
| AT86 |
Transporting Hazardous Materials Management and Support |
| AT91 |
Other General Transportation Basic Research |
| AT92 |
Other General Transportation Applied Research and Exploratory Development |
| AT93 |
Other General Transportation Advanced Development |
| AT94 |
Other General Transportation Engineering Development |
| AT95 |
Other General Transportation Operational Systems Development |
| AT96 |
Other General Transportation Management and Support |