---
kind: "section"
citation: "49 C.F.R. § 392.33"
title: "49"
number: "392.33"
heading: "Obscured lamps or reflective devices/material."
url: "https://uscodex.org/cfr/49/392.33"
---

# §392.33. Obscured lamps or reflective devices/material.

- (a) No commercial motor vehicle shall be driven when any of the lamps or reflective devices/material required by [subpart B of part 393 of this title](/cfr/49/part393-subpartB.md) are obscured by the tailboard, or by any part of the load or its covering, by dirt, or other added vehicle or work equipment or otherwise.
- (b) **Exception.** The conspicuity treatments on the front end protection devices of the trailer may be obscured by part of the load being transported.

## Notes

### Amendments

[70 FR 48025, Aug. 15, 2005]

### Authority

Authority: 49 U.S.C. 504, 13902, 31136, 31151, 31502; Section 112 of Pub. L. 103-311, 108 Stat. 1673, 1676 (1994), as amended by sec. 32509 of Pub. L. 112-141, 126 Stat. 405-805 (2012); and 49 CFR 1.87.

### Source

Source: 33 FR 19732, Dec. 25, 1968, unless otherwise noted.

### Amendments

[70 FR 48025, Aug. 15, 2005]