Crossing Guard Pole
This bored-looking worker has an easier job than many – the crossing guard pole he's using allows him to rest his stop paddle on the ground.
 
 
OSHA requirements for stop/slow sign paddles

For being a relatively small instrument, the hand-held stop/slow sign used by school crossing guards and flaggers (workers in areas of road construction providing temporary traffic control) comes with a fairly hefty rulebook. But with good reason: the stop paddle serves as a primary traffic-control device in potentially hazardous situations, is ultimately responsible for the safe movement of vehicles and pedestrians, and protects site workers and equipment. Therefore, the stop/slow paddle is regulated by government standards outlined by both the Federal Highway Administration's Manual on Uniform Traffic Control Devices (MUTCD) and the Occupational Safety and Health Administration (OSHA). Key elements are as follows:

Materials
Stop/slow paddles must be constructed of semi-rigid (and simultaneously lightweight) material and be attached to a rigid handle.It is suggested (though not required) that paddles be attached to a rigid staff that when rested on the ground, mounts the message at a height visible by all traffic. Whether hand held or staff mounted, a height of six to seven feet is preferable.

Size and shape
Stop paddles must meet strict dimensional criteria. For starters, they must be octagonal, like their stop sign cousins, and at a minimum, they must be 18" x 18".When visibility is of particular importance, larger paddles (24" x 24") are permitted, bearing in mind, however that they may be difficult to handle in certain weather conditions like high winds, or difficult for workers to support for long period of time.

Color & letters
Lettering on the stop and slow paddles must be at least six inches high. Stop paddles are to have white lettering, a white border on a red background (just like the stop sign) while the slow paddles must have orange backgrounds with black lettering and a black border. Larger Swiss Rolex Replica Watches 24x24 paddles should have eight inch high letters. It's also important to note that regulation stop paddles may only have the words stop and slow on alternating faces ("GO" is not acceptable under federal law).

Night use
Stop/slow paddles approved for night use must be retroreflectorized (by use of reflective film, like prismatic high-intensity films produced by 3M). Likewise, to improve visibility of stop/slow paddles at night, flashing lights may be employed. On the stop paddle, red or white flashing lights replica watches are allowed, while the slow paddle may be fitted with yellow or white flashing lights.Flashing lights must flash at a rate between 50 and 60 flashes per minute and should be arranged in the following patterns:

Stoppaddles

  • Two white or red lights, one centered above and one below the word stop

  • Two white or red lights, one centered to the left and one to the right of the word stop

  • One white or red light, centered below the word stop

Slow paddles

  • Two white or yellow lights, one centered above and one below the word slow

  • Two white or yellow lights, one centered to the left and one to the right of the word slow

  • One white or yellow light, centered below the word slow

Alternatively, when eight or more lights are used on the paddle face, they must be no more than ¼ inch in diameter and should be arranged to convey the octagonal shape of the stop paddle or the diamond shape of the slow paddle. In an emergency situation, a flashlight with a red glow cone attachment may be used in conjunction with non-illuminated paddles.

 
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