What type of device is used to alert motorists of construction activities on the roadway?

Flashing lamps are devices specifically designed to catch the attention of motorists, particularly in scenarios that demand increased awareness, such as construction activities on the roadway. These lamps produce a bright, noticeable light that can warn drivers of potential dangers or upcoming changes in traffic patterns, which is crucial in ensuring safety in areas where construction is taking place.

Their flashing nature creates a sense of urgency and alerts drivers to reduce speed or prepare to navigate around work zones. In contrast, while other devices like traffic cones guide and direct traffic, and overhead signs can communicate important messages, flashing lamps are the most effective in directly signaling the presence of hazardous conditions or changes ahead due to construction activities.