# Regulations
1 - 1926.601(b)(4)(i) - Motor vehicles.
# Standard Interpretations
1 - 1926.601(b)(4)(i) - Alternatives to common back-up alarms on construction motor vehicles; use of other effective technology or observers/signal persons.
2 - 1926.601(b)(4)(i) - Equipment reverse signal alarms must be audible above surrounding noise level.
3 - 1926.601(b)(4)(i) - Reverse signal alarms for motor vehicles.