Weigh-In-Motion (WIM) systems are installed at the scales located adjacent to the roadway. Weighing of trucks is done as they drive on or across the scale, without stopping. Weigh-in-motion systems are a relatively new technology that has been implemented in some states over the past 20 years. Weigh-in-motion systems (WIM) are a type of traffic monitoring system that uses scales to weigh vehicles as they pass by.
The data collected by WIM systems can be used to help manage traffic, enforce weight limits, and improve safety. Weighing is done electronically without requiring a truck to stop for weighing Weigh-in-motion offers several advantages over traditional fixed WIM sites:
- Less site disturbance/environmental impact
- Lower cost due to reduced infrastructure requirements
- Fewer false truck counts
How does weigh-in-motion work for trucks?
Trucks are weighed in two ways with WIM systems: gross vehicle weight (GVW) and axle weight. GVW is the total weight of a vehicle, including the weight of the truck, its load, and the driver. The axle weight is the weight of a truck on a single axle.
WIM systems use sensors to measure the force exerted by a truck on each scale as it passes by. This data is used to calculate the GVW and axle weight of the truck. The data can also be used to help identify overweight trucks and enforce weight limits.
How accurate is weigh-in-motion?
The accuracy of WIM systems depends on the type of sensors used. Some WIM systems use lasers or optical sensors to measure the force exerted by a truck on each scale. These sensors are very accurate and can measure down to a kilogram. Other WIM systems use mechanical or load cells to measure the force exerted by a truck on each scale. These scales are generally accurate down to 2-5% of their total capacity.
WIM technology is increasing in demand, especially in countries like Australia, where Weigh-in-Motion (WIM) can play an important role in reducing border risk and maintaining our nation’s productivity. Weigh-in-motion (WIM) refers to weighing vehicles as they drive past roadside infrastructure at speeds of 15 km/h or more. We provide turnkey Weigh-in-Motion Technology solutions that weigh entire trucks, including Rear Axles for axle weight, Front Axles plus Individual Wheels on Heavy Vehicles for Gross Vehicle WeightGVW), We also provide solutions for buses.
Weigh-in-Motion is a technology that has been developed over a number of years as a supplement to manned weighbridges. The traditional Weighbridge is still an important part of the many transport infrastructure network, but Weigh-in-Motion systems have certain advantages:
- They are typically installed away from the traffic congestion, so they don’t delay traffic like manned weighbridges do;
- Vehicles can be weighed without stopping, so there’s no need to queue up like there is at a manned weighbridge; and
- Weigh-in Motion systems can be used to measure other parameters such as axle weights and vehicle length.
WIM technology also offers certain disadvantages:
- It can be more expensive to install and maintain than manned weighbridges;
- The data collected is not as detailed as data collected from a manned weighbridge; and
- It can be difficult to get an accurate reading from a moving vehicle.
Despite these disadvantages, Weigh-in-Motion systems are becoming increasingly popular due to the advantages they offer. In Australia, Weigh-in-Motion systems are used to enforce weight limits for trucks and buses, manage traffic, and improve safety.
In conclusion, Weigh-in Motion systems are a type of traffic monitoring system that uses scales to weigh vehicles as they pass by. The data collected by WIM systems can be used to help manage traffic, enforce weight limits, and improve safety. Weigh in Motion Systems are widely used in the world at the moment by traffic managers to manage an efficient flow of vehicles. We will discuss about different aspects associated with Weigh-in-Motion System.
The article is based on Weigh-in-Motion Systems, it’s types and use issues that may arise due to its usage. Weighed vehicles can cause safety hazards for other vehicles because there are incorrect assumptions made when data is logged from these systems.