RUS 045 Periodic Speed Limit
The RUS 045 Periodic Speed Limit sign is for Special Speed Limits which are imposed for a specified period or periods during any day or during specified days. The sign is similar to the normal Speed Limit Sign except the numerals and text are white on a black background.
The RUS 045 Periodic Speed Limit sign shall be internally illuminated and the roundel shall be 600mm or 750mm in diameter. At periods when the speed limit is not in operation, the sign shall show a blank black disc. A manual or automatic device is required to light and turn off the sign at the appropriate times.