road signals arrow guide board

road signals arrow guide board

Road signals arrow guide board is a traffic control device, which is used to add advance warning, lane closure, traffic must merge with the adjacent area of traffic lane. They are commonly used for lane closure and slow motion maintenance activities. Open expressways with a speed limit of 45 miles per hour or more and use flashing arrow boards for all lane closures.

*Arrow roads should not be used on two-way two lane roads. Road arrow display is only applicable when the vehicle can move to another lane without danger in future traffic Multi lane, one-way road.

*The four blink mode can be used to provide additional advance warning when the arrow is not displayed. Flash does not allow bar graph display.

*Place the arrow panel to maximize the distance between the arrow panel and the point that the driver must first see and understand the arrow. For roads with a speed limit of 45 mph or higher, it provides at least 1 mile of readability (more if possible). The arrow board mounted on the trailer shall be 4 feet high, 8 feet wide and 7 feet wide and high. If this speed limit is less than 45 mph, a minimum clearance of 1500 feet should be provided. *For fixed lane closures, the arrow board is placed on the tapered inner shoulder near the starting point of the cone. Avoid placing them near ramps, central intersections, and intersections as they can confuse drivers. Only use one arrow per fixed Lane panel to end up. There are also many arrow boards that encourage drivers to change lanes unnecessarily.

Precautions for use

*For mobile maintenance activities in closed lanes, the arrow board must be placed on the closed Lane behind the vehicle. If possible, use two arrow panels in the mobile / mobile work area; one on the first shadow vehicle in the closed lane and the other on the shoulder of the first shadow vehicle, the pickup or trailer arrow panel should be placed on the vehicle separate from the work vehicle and between the last work vehicle and the approaching vehicle.

*In areas with limited sight distance, arrow vehicles may need to stay behind or stop at the back of an activity to maintain the best visibility of vehicles close to the road. As the active sight distance increases, arrow board vehicles should be allowed to decrease. However, the distance between the arrow board vehicle and the work activity should be short enough to prevent the driver from re entering the lane