What characterizes an active crossing?

An active crossing is characterized by the presence of traffic control devices that actively manage the flow of traffic. These devices can include traffic lights, gates, warning lights, or signs that indicate the presence of crossing paths, such as train tracks. The purpose of these devices is to alert drivers and pedestrians to the need for caution and to provide clear instructions on when it is safe to cross. This ensures safety at locations where there is potential conflict between vehicles and other users, such as pedestrians or trains.

The other options do not accurately describe an active crossing. Locations without signals or signs would be classified as passive crossings, and a crossing designated only for bicycles or emergency vehicles would not be considered a standard active crossing. The presence of traffic control devices is what distinguishes an active crossing from other types, reinforcing the importance of these devices in promoting safety for all users.