OSHA 1926.602(a)(9)(ii): backup alarms on earthmoving equipment
Under 29 CFR 1926.602(a)(9)(ii), earthmoving or compacting equipment with an obstructed view to the rear may not be used in reverse unless it has a working reverse signal alarm distinguishable from the surrounding noise level, or an employee signals that it is safe to back up.
Official text
(a)(9)(ii) No employer shall permit earthmoving or compacting equipment which has an obstructed view to the rear to be used in reverse gear unless the equipment has in operation a reverse signal alarm distinguishable from the surrounding noise level or an employee signals that it is safe to do so.Read the full section on eCFR
(a)(1) These rules apply to the following types of earthmoving equipment: scrapers, loaders, crawler or wheel tractors, bulldozers, off-highway trucks, graders, agricultural and industrial tractors, and similar equipment. The promulgation of specific rules for compactors and rubber-tired “skid-steer” equipment is reserved pending consideration of standards currently being developed.Read the full section on eCFR
What it requires, in plain English
- The rule applies to earthmoving or compacting equipment with an obstructed view to the rear.
- Earthmoving equipment under 1926.602(a) includes scrapers, loaders, crawler or wheel tractors, bulldozers, off-highway trucks, graders, agricultural and industrial tractors, and similar equipment.
- The reverse signal alarm is in operation and distinguishable from the surrounding noise level.
- Without a working alarm, the machine reverses only when an employee signals that it is safe to do so.
Where it shows up on site
- A loader backing across a grading area with a disconnected or muffled backup alarm
- A dozer working beside a crusher or pump where the alarm is lost in the noise
- Workers on foot setting grade stakes behind a reversing machine
Verify on site before you call it
A photo rarely shows every fact a standard depends on. Confirm these in person before treating the condition as a violation:
- Does the operator have an obstructed view to the rear?
- Is the alarm working, and can it be distinguished from the surrounding noise where workers on foot are?
- If the alarm isn’t working, is an employee signaling the operator when it’s safe to back up?
- Is the machine earthmoving or compacting equipment, or a motor vehicle covered by 1926.601?
Typical corrective actions
- Stop reverse operation until the alarm is repaired or an employee is assigned to signal.
- Repair or replace the reverse signal alarm and check it at the start of each shift.
- Assign a signal person where noise or blind spots make the alarm hard to rely on.
- Keep workers on foot out of the travel path of reversing equipment.
Common questions
Can a spotter be used instead of a backup alarm on earthmoving equipment?
Under 1926.602(a)(9)(ii), equipment with an obstructed rear view may be used in reverse if it has a reverse signal alarm in operation that is distinguishable from the surrounding noise level, or if an employee signals that it is safe to do so.
Does the backup alarm rule apply to every machine?
It applies to earthmoving or compacting equipment with an obstructed view to the rear. Trucks and other motor vehicles on an off-highway jobsite fall under 1926.601(b)(4), which has a similar alarm-or-observer rule.
Turn the observation into a notice
Record what the photo shows, confirm the on-site checks above, and identify the responsible company and due date. Use the fillable construction safety notice template or follow aworked example from observation to verified fix. Cirqify can draft the notice from your circled photo for you to review.
Related standards
This guide summarizes federal OSHA construction standards for general information. It is not legal advice. States with their own OSHA-approved plans may set different or additional requirements; see federal and state coverage.