Another very important place to employ this triple peek is when using an aerial work platform. Before elevating, we should look up, then down and then keep looking up until we quit raising the platform. Crushing accidents can occur when platform operators are looking down and over-the-side while raising the platform. The operator can crush himself into overhead obstructions or ceiling trusses. Focus on the most immediate hazard while having knowledge of your surroundings.
Remember: left-right-left and up-down-up.
Happy trails to my crane and rigging friends,