When work is performed at night, the contractor must provide adequate lighting so that:

the work can be performed safely,
the work can be adequately inspected, and
traffic can move safely around the work

Occupational Safety and Health Administration (OSHA)

Standard 1926.56

has the minimum lighting standards for workers safety. If deemed necessary, the Department has the right to request additional lighting above the minimum in order to facilitate adequate inspection and safe operations of the work. Notify the contractor of failure(s) to comply with these requirements. If the contractor does not correct the identified deficiencies, suspend the work without suspending the working day charges and withhold all future estimates until the contractor complies.

Refer to the Traffic Safety Division’s (internal access only) for more information.