Extension-Ladder Safety: Multimodal-feedback Indicator for Improved Ladder Positioning Safety and Efficiency

Improper positioning of an extension ladder frequently results in "ladder slide-outs," which are the most common cause of ladder-fall scenarios. This invention relates to an extension ladder positioning indicator which is easily installed in a ladder rung; provides multiple cues (visual, sound, and vibration) for rapidly identifying and positioning correct ladder inclination.

CDC-NIOSH researchers found that this technology improved accuracy and efficiency of ladder positioning for both "experienced" and "novice" ladder users, as compared to the "no instruction" method and the standard anthropometric method, and that it was also significantly faster than the bubble indicator method. When properly implemented, this effective and easy to use ladder positioning indicator will reduce the risk of extension ladder slipping and tipping and, ultimately, will reduce the number of fall incidents and injuries – benefitting construction workers, employers, contractors and workplace insurers.