What is an essential feature of temporary traffic signals?

An essential feature of temporary traffic signals is that they must meet regulatory standards. This requirement ensures that the signals function reliably and effectively to control traffic flow, particularly in work zones or areas undergoing construction. Meeting these standards helps ensure that the signals are visible, properly timed, and use clear signals to convey information to drivers. Compliance with regulatory standards also enhances safety for both motorists and workers in the vicinity by providing a consistent and predictable traffic control mechanism. This adherence to established guidelines is crucial to minimize confusion and reduce the risk of accidents in areas where traffic patterns may be altered.