# COMAR Title 11 — Department of Transportation

## Subtitle 22 — Motor Vehicle Administration —Preventive Maintenance Program

### Chapter 04 — Preventive Maintenance Standards for Freight Trailers and Freight Semitrailers

#### Regulation .11 Hitches and Coupling Devices.

*COMAR 11.22.04.11*

A. Upper Fifth Wheel Plate.

B. Kingpin.

C. No-Slack Hitch. Apply air pressure to no-slack hitch before inspecting.

D. Converter Dolly and Fifth Wheel Structure. Inspect:

E. Trailer Hitches. Inspect hitch for:

F. Secondary Attachments. Inspect for presence and condition of: