| P23 | P23 | New Carrollton - Fairwood | 2166 |
| P22 | P22 | Greenbelt - Cheverly | 2166 |
| P78 | P78 | Upper Marlboro Loop | 2166 |
| P64 | P64 | Suitland - Downtown Largo | 2166 |
| P65 | P65 | Capitol Heights - Penn Mar SC | 2166 |
| P37 | P37 | College Park - Adelphi | 2166 |
| P84 | P84 | Branch Ave - Brandywine | 2166 |
| P54 | P54 | Cheverly - Addison Rd | 2166 |
| P95 | P95 | Southern Ave - Friendly/Fort Washington | 2166 |
| P44 | P44 | New Carrollton - Downtown Largo | 2166 |
| P71 | P71 | New Carrollton - Bowie State | 2166 |
| P19 | P19 | Greenbelt - Laurel | 2166 |
| P2X | P2X | Greenbelt - New Carrollton Ltd Stop | 2166 |
| P57 | P57 | Downtown Largo - Woodmore Towne Centre | 2166 |
| P86 | P86 | Naylor Rd - Clinton | 2166 |
| P56 | P56 | Addison Rd - Downtown Largo | 2166 |
| P5X | P5X | New Carrollton - PGCC Ltd Stop | 2166 |
| P83 | P83 | Naylor Rd - Capital Crossing Apartments | 2166 |
| P52 | P52 | New Carrollton - Upper Marlboro | 2166 |
| P85 | P85 | Branch Ave - Southern Regional Hosp | 2166 |
| P43 | P43 | Takoma Langley - Addison Rd | 2166 |
| P76 | P76 | Addison Rd - Upper Marlboro | 2166 |
| P77 | P77 | Marlboro Village - Marlboro Meadows | 2166 |
| P88 | P88 | Southern Ave - Branch Ave | 2166 |