What is the purpose of a traffic signal warrant analysis?

The purpose of a traffic signal warrant analysis is fundamentally to determine the need for traffic signals at intersections based on specific criteria. This analysis evaluates various factors such as traffic volume, accident history, pedestrian activity, and the types of roadways involved to decide whether installing a traffic signal is justified. The intention is to enhance traffic safety and improve the overall flow of vehicles and pedestrians. By applying standardized criteria, transportation engineers can ensure that signals are placed where they are most needed, rather than installed arbitrarily.

This requirement for an objective assessment helps manage limited resources effectively, ensuring that signals are only used where they will have a significant positive impact on traffic conditions. The use of such warrants ensures that signals function as intended—improving safety and efficiency—rather than contributing to unnecessary delays at intersections where they are not warranted.