This report presents guidelines to assist highway agencies in developing and implementing a plan for night work that will provide for public and worker safety and satisfy the community while minimizing waste and other problems associated with the supply of materials and capable workers. The guidelines also contain a number of innovative procedures suggested by state DOTs to respond to special nighttime problems, such as control of glare, visibility of workers, and the need to improve conspicuity of traffic control devices. This report will be of particular interest to engineers responsible for development and maintenance of traffic control plans for construction and maintenance projects.