SN 44 - Upper and Lower Controls on Vehicle-mounted Elevating and Rotating Work Platforms

This OSH Standards Notice discusses the circumstances under which upper and lower controls are required for multipurpose equipment, such as digger derricks and other combination devices. Standards affected: 29 CFR 1910.67 - Vehicle-mounted elevating and rotating work platforms, 29 CFR 1926.453 - Aerial lifts, and 29 CFR 1926.955 - Portable ladders and platforms.

Also reference the safety and health topic pages for Cranes and Derricks, Materials Handling and Storage, Aerial Lifts and Overhead and Gantry Cranes along with CFR 104 - Powered Platforms for Building Maintenance.