Section 57.14132 - Horns and backup alarms for surface equipment (a) Manually-operated horns or other audible warning devices provided on self-propelled mobile equipment as a safety device shall be maintained in a functional condition.
(b) - (1) When the operator has an obstructed view to the rear, self-propelled mobile equipment shall have-
- (i) An automatic reverse-activated signal alarm;
- (ii) A wheel-mounted bell alarm which sounds at least once for each three feet of reverse movement;
- (iii) A discriminating backup alarm that covers the area of obstructed view; or
- (iv) An observer to signal when it is safe to back up.
- (2) Alarms shall be audible above the surrounding noise level.
- (3) An automatic reverse-activated strobe light may be used at night in lieu of an audible reverse alarm.
(c) This standard does not apply to rail equipment.
053-3 Wyo. Code R. § 57.14132