Evaluation of Micromobility User Response: Near Side Dutch-Style Bicycle Signal Countdown Timer

Signal countdown timers provide transportation users with real-time information about when a traffic signal head will change state. Countdown timers have been used around the world in different forms for various transportation modes, including pedestrians, bicyclists, and vehicles. These devices display the relative time remaining on a signal phase and are intended to help users make safer or more efficient decisions at signalized intersections. The City of Portland in Oregon, USA, installed several Dutch-Style Bicycle Signal Countdown Timers at intersections. As shown in this feature, these devices display LED bicycle symbols in three colors (green, yellow, and red) plus a red countdown timer paired with the word "WAIT" to communicate the time remaining until the signal head turns green. The 11th Edition of the Manual on Uniform Traffic Control Devices does not contain guidance that addresses the installation of a near-side Dutch-Style Bicycle Signal Countdown Timer. Oregon State University was retained to perform before-after evaluations at select intersections to support the Federal Highway Administration request to experiment.