Impact of Traffic Signal Countdown Displays on Driver Behaviors

Adaptive behaviour in traffic : An individual road user perspective

“…If a stop was inevitable, then the CDT was used for predictions and hence efficiency in terms of reducing start-up delays but there were also cases of red-light violations. These effects have also been shown in relation to CDTs showing the remaining time left to green for car drivers (Chiou & Chang, 2010;Islam, Hurwitz, & Macuga, 2016;Liu & Kircher, 2018;Wenbo, Zhaocheng, Xi, & Feifei, 2013;Yuan, Zhang, & Lei, 2009). This can be interpreted as the subjective safety margins being large enough for the road user to move while expecting green signal, in relation to the discomfort of frustration with unnecessary waiting time or, at least for cyclists, of having to travel within a crowd, which could be the result of waiting a bit longer.…”