---
kind: "section"
citation: "30 C.F.R. § 77.410"
title: "30"
number: "77.410"
heading: "Mobile equipment; automatic warning devices."
url: "https://uscodex.org/cfr/30/77.410"
---

# §77.410. Mobile equipment; automatic warning devices.

- (a) Mobile equipment such as front-end loaders, forklifts, tractors, graders, and trucks, except pickup trucks with an unobstructed rear view, shall be equipped with a warning device that—
  - (1) Gives an audible alarm when the equipment is put in reverse; or
  - (2) Uses infrared light, ultrasonic waves, radar, or other effective devices to detect objects or persons at the rear of the equipment, and sounds an audible alarm when a person or object is detected. This type of discriminating warning device shall—
    - (i) Have a sensing area of a sufficient size that would allow endangered persons adequate time to get out of the danger zone.
    - (ii) Give audible and visual alarms inside the operator's compartment and an audible alarm outside of the operator's compartment when a person or object is detected in the sensing area; and
    - (iii) When the equipment is put in reverse, activate and give a one-time audible and visual alarm inside the operator's compartment and a one-time audible alarm outside the operator's compartment.
- (b) Alarms shall be audible above the surrounding noise levels.
- (c) Warning devices shall be maintained in functional condition.
- (d) An automatic reverse-activated strobe light may be substituted for an audible alarm when mobile equipment is operated at night.

## Notes

### Amendments

[54 FR 30517, July 20, 1989]

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 36 FR 9364, May 22, 1971, unless otherwise noted.

### Amendments

[54 FR 30517, July 20, 1989]