#	Letters of Interpretation
1	03/02/2010 - 1926.602(a)(9)(ii) - Permissible methods of operating trucks in reverse on construction sites.
2	09/20/2007 - 1926.602(a)(9)(ii) - Whether "discriminating [back-up] alarms" may be used to meet the requirements of 29 CFR 1926.602(a)(9)(ii).
3	09/20/2007 - 1926.602(a)(9), 1926.602(a)(9)(ii) - Whether "discriminating [back-up] alarms" may be used to meet the requirements of 29 CFR 1926.602(a)(9)(ii).
4	09/27/2004 - 1926.602(a)(9)(ii) - Alternatives to common back-up alarms on construction motor vehicles; use of other effective technology or observers/signal persons.
5	09/27/2004 - 1926.602(a)(9), 1926.602(a)(9)(ii) - Alternatives to common back-up alarms on construction motor vehicles; use of other effective technology or observers/signal persons.
6	05/27/2004 - 1926.602(a)(9)(ii) - Equipment reverse signal alarms must be audible above surrounding noise level.
7	11/03/1998 - 1926.602(a)(9) - Requirements for back-up alarms on construction vehicles.
8	10/29/1991 - 1926.602(a)(9) - Noise and potential hazard of backup alarms on equipment at construction sites.
9	08/20/1987 - 1926.602(a)(9)(i) - Horns and audible alarms.
10	01/21/1987 - 1926.602(a)(9)(ii) - "Obstructed view to the rear" relative to use of back-up alarms.
11	12/18/1984 - 1926.602(a)(9) - Use of an electronic back-up mirror used with a with a reverse audible alarm.
12	06/25/1982 - 1926.602(a)(9)(ii) - Requirements for back up alarms.

#	Regulations
1	03/14/2001 - - Material handling equipment.