Measures to Reduce Errors in High-speed Weigh-In-Motion
To reduce errors caused by road factors in weighing, the following requirements should be met in the area affecting weighing before and after the weighing equipment at non-site enforcement points:
1. The longitudinal slope should not exceed 2%, and the transverse slope of the road surface should not exceed 2%; 2. When on a cement road surface, deformation joints, pull rods, and fillers should be set between backfilled cement concrete and existing cement road surfaces; 3. When on an asphalt road surface, a gradient transition should be used between backfilled cement concrete and existing asphalt surface layers. Non-site enforcement points should avoid installation on the following road sections: 1. Sections within 200 meters of a flat intersection; 2. Sections with changes in the number of lanes; 3. Overpasses (affecting aerodynamics) and ramps (unevenness) sections; 4. Sections on bridges or other structures that will have dynamic effects on vehicles; 5. Sections under high-voltage wires or near radio transmitting stations and railway tracks. Additionally, to reduce weighing errors caused by vehicle driving behavior, the following measures should be taken in weighing sections: 1. When there are multiple lanes in the driving lane, solid lines should be used as lane dividers, and lane changing should be prohibited; 2. When the road alignment is good and speeding is easy, truck speed limit signs should be placed before the weighing detection area; 3. To combat intentional evasion of penalties, such as obscuring license plates, driving in reverse, or tailgating, violation capture recognition devices may be added.
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