| 204-08 | Practice and procedure. |
| 204-10 | Equipment standards. |
| 204-21 | Lighting requirements. |
| 204-24 | Traction devices. |
| 204-32 | Regulations for private carrier buses. |
| 204-36 | Authorized emergency vehicle permits. |
| 204-41 | Seat belt exemptions. |
| 204-44 | Standards for load fastening devices. |
| 204-50 | Ignition interlock breath alcohol devices. |
| 204-53 | Helmet exemption -- Antique motor-driven cycle. |
| 204-70 | Standards for vehicle connecting devices and towing methods. |
| 204-76 | Standards for brake systems. |
| 204-91A | Towing businesses. |
| 204-93 | Assistance vans. |
| 204-95 | Limousine businesses. |
| 204-96 | Vehicle impounds. |