At night, Type A and Type C lights should be used for what purpose?

Type A and Type C lights are specifically designed for use in traffic control systems, particularly during low visibility conditions such as nighttime. The primary purpose of these lights is to effectively alert oncoming traffic to the presence of work zones or other roadway hazards. When positioned correctly, they can enhance visibility and ensure that drivers are aware of potential dangers, thereby improving safety for both workers and motorists.

Utilizing these lights to alert traffic is crucial as failing to do so could result in accidents or near-misses due to reduced visibility. While they may have some utility in marking roadwork zones, their core function is more about providing visibility alerts to oncoming traffic rather than serving solely as markers or general illumination. Therefore, their role in alerting and guiding traffic makes them essential tools in traffic management during night operations.