# 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 .04 Brake Systems — Hydraulic and Vacuum.

*COMAR 11.22.04.04*

A. Brake Lines and Hoses. Visually inspect:

B. Vacuum System.

C. Drum Brakes—Hydraulic.

D. Disc Brakes—Hydraulic.

E. Brake Lines and Hoses—Hydraulic.