Traffic Signal Design

The objective of traffic signal design is to create a design for safe and efficient operation for the prevailing conditions at an intersection. This objective is accomplished by using design parameters and techniques that are specific to the roadway and intersection conditions. Traffic signal design and traffic signal timing are used to accommodate peak hour changes in traffic demand and pattern. However, traffic signal design elements are static and therefore costly and difficult to modify. The traffic signal design at an intersection can directly impact operational efficiency and overall safety based on the vehicle and pedestrian detection layout, especially at intersections with high-speed approaches.

The traffic signal design process should include considerations for optimal traffic signal timing as well as ensuring the safety and effective operation of the intersection. A comprehensive detection system for the traffic signal will enable the operation to respond to various traffic conditions throughout the day. Pedestrian and vehicular detection systems at a traffic signal can be used to provide information about demand and determine who will be served next and how long the traffic signal phase should be. It is critical to design the location of the detectors in relation to the controller to ensure high quality of intersection operation. The geometry of the intersection should be used for optimum performance of the detector layout and signal settings. The best practice to fine-tune the traffic signal design process is to find a balance between the location of the detectors relative to the stop line, the lengths of the detectors, passage time, and minimum green time for the prevailing conditions such as the approach speed. Another critical aspect of the optimal traffic signal design process is to take into consideration the signal timing techniques to provide a high level of service to all users.

If you need help with traffic signal design for your project, please give us a call or send an email and we will be happy to help you with all your traffic signal design needs at the most competitive prices.