Specifications include, but are not limited to: All signs available under this contract shall conform to requirements of the Manual on Uniform Traffic Control Devices (MUTCD). All signs shall be crash-tested and NCHRP-350 accepted with sign stands as specified. Roll-up signs provided under this contract shall provide both retroreflectivity and a high degree of legibility for the motorist, and contribute to the safety of highway workers. The sign, when installed on existing sign stands, shall retain full visibility to the approaching motorists by remaining perpendicular and maintaining a flat viewing surface, in varying wind and traffic conditions. Sign and sign material shall be durable, highly reflective, and fluorescent and offer maximum visibility in all day/night light situations