What types of vehicles are authorized to operate purple warning lights?

The use of purple warning lights is specifically designated for funeral escort and lead vehicles. These vehicles are authorized to use purple lights to indicate a special purpose, often relating to the transportation of a funeral procession, ensuring safe passage for mourners and the conveyance of respect during the event.

This color is unique in that it functions as a warning to other drivers about the presence of a funeral procession. It helps alert motorists to proceed with caution, as the vehicles with purple lights typically carry the highly sensitive and respectful nature of their task.

Other types of vehicles like police vehicles, fire trucks, private security vehicles, and commercial transport vehicles do not use purple warning lights, thus differentiating the role and purpose of funeral escort vehicles in traffic management and safety.