Which type of vehicle is allowed to use a flashing or revolving red light visible from the front and rear?

The correct choice for which type of vehicle is allowed to use a flashing or revolving red light visible from the front and rear is an ambulance. These lights are specifically used to alert other drivers to the presence of an emergency vehicle that is responding to a call. They serve an important purpose in traffic safety by signaling that the vehicle may require the right of way to navigate through traffic quickly and efficiently.

In jurisdictions such as New Brunswick, vehicles like ambulances are legally permitted to use these types of lights to enhance visibility and ensure that other road users take appropriate action, such as pulling over to allow the emergency vehicle to pass. This capability is crucial during emergencies, where every second counts.

While other vehicles, such as fire department vehicles, also use flashing lights to indicate an emergency situation, the context of the question emphasizes the ambulance specifically. School buses have their own set of signals for unloading and loading passengers, typically involving yellow and red lights without revolving or flashing red lights for non-emergency contexts. Utility vehicles generally use different types of warning lights that alert drivers to their presence but do not include the flashing or revolving red lights designated for emergency services.