Wanco Metro Variable Message Sign - Deployment; Locating and Positioning the Trailer

16 Owner’s Manual
Wanco® Metro™ Message Sign
4.4 Deployment
4.4.1 Locating and positioning the trailer
■ When deployed, the message sign mast rises to over 11 feet (3.4 meters). When
choosing a location, ensure the area above the trailer is clear of overhead wires and
other obstructions.
■ To reduce the risk of shifting, rolling, or overturning, locate the message sign on a firm,
level surface.
■ Depending on vehicle speed, optimal positioning provides a line-of-sight from 500 to
1000 feet (155 to 310 meters), which allows ample time for drivers to read and react to
the message on the sign.
■ Fog, rain, snow, and blowing dust can reduce the detection distance from drivers to the
sign. Allow for possible weather conditions when selecting a location.
■ For the message sign’s solar charging system to function properly, locate the trailer
where it will be exposed to full sunlight during daylight hours.
 The solar panel charging capacity is significantly affected by shadows. Avoid
locating the trailer where the sun will be obstructed, such as under a tree or in the
shadow of a building.
 Ensure the solar panels are clean (see Section 6.3.2, page 40).
■ Position the trailer so the rear of the trailer faces oncoming traffic.
■ Angle the message sign display slightly toward the roadway (see Figure 4-3).
❑ Too great an angle creates a short viewing distance, and does not allow drivers
enough time to see the display.
❑ A slight angle provides a long viewing distance, and gives drivers plenty of time to
see the display.
DANGER
Electric shock hazard.
Contact with overhead electrical power lines will cause
serious injury or death.
Do not position message sign under power lines.