A Bluetooth Traffic Light Time Extension System for Pedestrians with Disabilities
https://doi.org/10.1109/SEEDA-CECNSM.2019.8908464
Pavlos Kokozidis, Iordanis Kostelidis, Myrsini Stasinou, Alexandra Salpigkti and others

This paper presents a new and simple approach to traffic lights crosswalk time extension. It uses a seamless integration to conventional traffic lights based on low cost components and micro controllers. The goal of the presented project is to provide extra time to a pedestrian or a group of pedestrians with disabilities to pass a crosswalk.

https://www.youtube.com/watch?v=5NsEw87wjpQ