Low clearance refers to the maximum height vehicles can safely pass underneath an overhead structure, like a bridge or a tunnel. Truck drivers must understand this meaning, as ignoring low clearance signs can result in significant vehicle damage and road safety hazards.

Low clearance. When a bridge has an overhead clearance less than 14 feet, this sign is posted indicating the actual legal overhead clearance of a bridge or elevated structure.Do not enter if your vehicle is taller than the height listed on the sign. Overheight vehicles must take another route around restricted clearance.

What does a Low Clearance sign mean? A Low Clearance sign warns road that the overpass ahead has a low clearance. The sign indicates the actual overhead clearance of a bridge, overpass or other elevated structure. If your vehicle is taller than the height listed on the sign, do not enter and take another route.

2014年10月15日 · Figure 24 is a photo showing damage caused to the underside of an interstate bridge as a result of being struck by a vehicle that was too tall to pass underneath. Pieces of concrete are scattered over the roadway, completely closing that direction of the interstate.

I built a bridge in RI a few years ago, and RIDOT asked us to list the bridge height signs as 1’ lower than the lowest clearance point on the bridge, to hedge against impacts to the bridge structure.

2018年1月15日 · Many states have a statutory minimum bridge height [check front of trucker atlas] (or a maximum height before a permit is required) and as long as a bridge is at or higher than this, they may or may not post it's height. However, if it's less, then it must be posted.

Advance load signs (W3-19, W3-30, and W3-31) are for use to warn of bridges, elevated structures, or highways where weight restrictions are in effect (see section 215.1 MUTCD). The W3-19 sign (X TON BRIDGE) is for use in conjunction with weight limit signs indicating the safe capacity of bridges or elevated structures.

2023年12月5日 · All bridges with a clearance of less than 16 feet 6 inches (about 5 metres) are normally signed. Both regulatory roundels and warning triangles can be used, depending on the type of...

Regulatory low bridge height signs are placed on the bridge and at the roadside in front of the bridge. For more information on regulatory road signs, see order road signs. Some low height bridges may have an advance warning of a mandatory height restriction up ahead.

The Aluminum Clearance Sign (W12-2) features two top and bottom centered, pre-punched mounting holes and can be easily installed on a post, wall, or fence. Used to warn a driver of approaching height restrictions in the designated roadway.