United States Civil Defense Maintain Top Safe Speed sign



The Maintain Top Safe Speed sign is one of the only signs in the Manual on Uniform Control Devices that has never been posted in real life. This is for good reason. It was introduced as part of a batch of Civil Defense signs in the 1961 MUTCD. It is intended to be used, as the 1971 MUTCD says, “where radiological contamination is such as to limit the permissible exposure time for occupants of vehicles passing through the area.” Since this situation has never happened in the United States, there has never been any reason to use this sign.

Our replica Maintain Top Safe Speed sign is made to the exact 1961 federal standards for signs of this type. We have accurately followed the standard to make every detail, from the font to the text sizes to the layout, just like the real thing would look like. (This replica sign does not comply with the reflectivity requirements of the modern MUTCD, and intended to be used as a display piece only.) Show your need for speed by adding it to your garage, man cave, bar, office, or anywhere els!

Our Maintain Top Safe Speed sign is flat-printed on heavy 14-gauge steel. It can be installed either indoors or outdoors, and contains mounting holes for easy installation. Select one of the following sizes:

  • 9 in. × 12 in. (about 23 cm × 30 cm)
  • 15 in. × 20 in. (≈38 cm ×  51 cm)
  • 21 in. × 28 in. (≈53 cm × 71 cm)
  • 30 in. × 40 in. (≈76 cm × 102 cm)

We can make just about any road sign from anywhere in the world! Got a route marker, directional sign, or welcome sign you’d like made? We’d be happy to help! To get started on your custom order, just contact Jake.

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