A weigh station is a checkpoint along a highway to inspect vehicular weights. Usually, trucks and commercial vehicles are subject to the inspection. This article is about the semi-truck For the North American use of the word see Pickup truck. A commercial vehicle is a type of Vehicle that is used for carrying goods or passengers
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Overview
Weigh stations are equipped with scales, some of which permit the trucks to continue moving while being weighed, while older scales require the trucks to stop. A weighing scale (usually just "scale" in common usage except in Australian English where "scales" is more common is a Measuring instrument for There are a variety of scales employed from single axle scales to multi-axle sets. Signal lights indicate if the driver should pull over for additional inspection or if they are allowed to return to the highway.
Some jurisdictions employ the use of portable scales, allowing weigh stations to be set up at any point. Portable scales allow states to set up temporary scales for situations such as seasonal check points, temporary checkpoints on isolated roads often used by trucks, and help prevent drivers from avoiding scales at fixed locations. Portable scales may be set up at purpose built locations that are not normally manned. A common reason for setting up portable scales is to monitor trucks during harvest season.
United States
A weigh station located near state border is called a port of entry. States may also locate weigh stations in the interior of the state. Interior weigh stations are often located at choke points or areas where freight originates or is delivered.
Weigh stations were primarily created to collect road use taxes before IFTA created an integrated system of doing so. While taxes can still be paid at weigh stations, their primary function is now enforcement of tax and safety regulations. These include: to check freight carrier compliance with fuel tax laws; to check weight restrictions; to check equipment safety; to check compliance with Hours of Service Regulations. A fuel tax (also known as a petrol tax, gasoline tax, gas tax or fuel duty) is a Sales tax imposed on the sale of Fuel. Weigh stations are regulated by individual state governments and therefore have vastly different requirements from state to state. They are typically operated by the state's Department of Transportation (DOT) in conjunction with the state highway patrol or state police, thus enabling enforcement of applicable laws. A highway patrol is either a Police agency created primarily for the purpose of overseeing and enforcing Traffic safety Compliance on roads and highways State police are a type of sub-national Territorial police force, particularly in Australia and the United States. The federal maximum weight is set at 80,000 pounds. The pound or pound-mass (abbreviation lb, lbm, or sometimes in the United States #) is a unit of Mass Trucks exceeding the federal weight limit can still operate on the country's highways with an overweight permit, but such permits are only issued before the scheduled trip and expire at the end of the trip. Overweight permits are only issued for loads that cannot be broken down to smaller shipments that fall below the federal weight limit, and there is no other alternative to moving the cargo by truck. Permitted oversize trucks are often required to coordinate with the Departments of Transportation and law enforcement agencies of the transited states before the trip begins, as most states require oversize trucks to be escorted. An escort vehicle is an Automobile used to escort trucks with large loads Convoys of large vehicles guide motorists through construction sites and assist aircraft Many states have weigh-in-motion technology that allow a continuous flow of truck weighing.
Many states also check freight paperwork, vehicle paperwork, and logbooks to ensure that fuel taxes have been paid and that truck drivers are obeying the Hours of Service (a federal requirement). The hours of service ( HOS) are regulations issued by the Federal Motor Carrier Safety Administration (FMCSA governing the working hours of anyone operating a Also the truck and driver may have to undergo a DOT inspection as most states perform the bulk of their DOT inspections at their weigh stations. In some cases, if a truck is found to be overweight, the vehicle is ordered to stop until the situation can be fixed by acquiring an overweight permit. In other cases, the driver may receive an overweight ticket and may or may not be required to offload the extra freight. Offloading the extra freight may not be practical for perishable or hazardous loads. The first state to implement a weight law was Maine, which set a limit of 18,000 pounds (8 tons; 8,200 kg) in 1918. The State of Maine ( is a state in the New England region of the northeastern United States of America, bordering the Atlantic Ocean The pound or pound-mass (abbreviation lb, lbm, or sometimes in the United States #) is a unit of Mass Year 1918 ( MCMXVIII) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian calendar (or a Common
Truckers often refer to weigh stations as "chicken coops. " [1] The song 'Convoy' by C W McCall refers to the aforementioned 'chicken coops' in the line: "Those chicken coops were full of bears and choppers filled the skies"
Electronic Weigh Station Bypass
Many states now use electronic bypass systems to alleviate some of the truck traffic through the weigh station. It is best known as PrePass, NorPass in Kentucky, or simply A. PrePass is an intelligent transportation system (ITS service that electronically verifies the safety credentials and weight of commercial vehicles at participating state The Commonwealth of Kentucky ( is a state located in the East Central United States of America. V. I. (Automatic Vehicle Identification). The system consists of the equipment at the weigh station itself, as well as a truck mounted transponder, usually placed on the inside of the windshield. These are similar to transponders used for toll collection. A toll road, (also known as a tollway, turnpike, pike, or toll highway, especially if it is constructed to Freeway standards Each transponder is directly registered to a specific truck, and contains a unique identification. The registration process propagates information such as carrier name, unit number, and elected gross weight to weigh stations. In addition, the system keeps a basic safety and compliance record for each vehicle. As a truck approaches a weigh station (approximately one mile before), an electronic "reader" on a boom over the freeway reads the information from the truck transponder. At the same time, the truck is usually driving over high-speed electronic scales embedded in the road. The system computes the weight, by axle and gross, and determines if it is within the limits. It also looks at the safety and compliance record on the data base. The motor carrier safety rating is an evaluation given to an interstate commercial Motor carrier (a company which employs truck or Bus drivers by the The A display shows the results to the weigh master, including the speed of the vehicle. The weigh master may have the system automatically determine if a truck needs to stop or may override the system. Approximately one-half to one full mile after passing under the "reader", the truck will pass under another boom which has an electronic unit to send the transponder a signal. If the weight and safety information are acceptable the truck may receive a green light and can continue without entering the weigh station at all. A driver may get a red light. On these occasions, the truck must pull into the weigh station for the normal weigh-in procedure. The most common reason a truck is "redlighted" is a weight problem, or a random check. Each time a truck is randomly pulled in, it is noted in the system whether the driver was compliant or not during the check. This affects how often a truck (or different trucks from the same company) are pulled in. For example, a company who is very compliant with the law, will probably only have 5% of its trucks "redlighted. " On the other hand, a company whose trucks have compliance issues during the random checks will have their information updated accordingly, and might get "redlighted", for example, 30% of the time.
In popular culture
In Knight Rider Season 2 episode Mouth of the Snake originally aired on April 8, 1984, a highway patrol officer tries to stop a tractor-trailer failing to stop at a weigh station, only to find a rocket fired from the trailer to kill him to evade law enforcement. This is a list of episodes of the Knight Rider TV series ordered by the release date Events 217 - Roman Emperor Caracalla is Assassinated (and succeeded by his Praetorian Year 1984 ( MCMLXXXIV) was a Leap year starting on Sunday (link displays the 1984 Gregorian calendar) truckcartransporterarp750pixjpg|thumb|right|A tractor with an auto-transport Semi-trailer. A rocket or rocket vehicle is a Missile, Aircraft or other Vehicle which obtains Thrust by the reaction of the
In the first season "CHiPs" episode "Aweigh We Go," Ponch and Jon are assigned a week's investigative duty at a weigh station to investigate a series of tractor-trailer thefts. CHiPs is an American Television Drama series produced by Metro-Goldwyn-Mayer Studios (licensee by Turner Entertainment)
In the film "Black Dog", the main character Jack Crews (Patrick Swayze) is a truck driver transporting illegal weapons and is nearly caught when he stops at a weigh station on the highway. Black Dog is a 1998 film about an ex-con manipulated into transporting illegal arms Patrick Wayne Swayze (born August 18, 1952) is a three- time Golden Globe nominated American Dancer, Actor, and
Canada
British Columbia
Weigh Stations (aka "Scales") are usually on the right-hand side of the travelled highway, but median scales are appearing (as of 2005) on divided highways, often combined with "weigh-in-motion" technology.
A median scale is placed between the opposing lanes of traffic, necessitating heavy vehicles exiting from the left lane (rather than the right) and re-entering traffic from the left, potentially at a lower speed than the normal "free-flow" traffic would expect in the left (often thought of as "fast") lane.
"Weigh-in-motion" technology allows heavy vehicles that do not exceed limits of weight (and size) to pass the scale, thus improving both freight and weigh scale operation efficiency.
Alberta
In Alberta, scales can be on either side of the road, on the median or off-highway. Flashing lights inform drivers as to whether the scale is operational. Occasionally, the lights may be operational in only one direction.
Alberta scales are all of the 'weigh-in-motion' type, and vehicles are not required to stop; they merely have to slow to 10 km/h.
Scales which are not operational are often available to drivers as a 'self-weigh' site, where drivers can check their axle loads without enforcement officials being involved.
North West Territories
The government of the North West Territories operates only one scale. It is situated in the townsite of Enterprise, 83 kilometres north of the border with Alberta, and issues permits for vehicles from other jurisdictions as well as weighing vehicles and enforcing hours of service legislation.
Taiwan
In Taiwan, weigh stations (traditional Chinese: 地磅站) are located on major highways, especially at all toll booths on freeways. A toll road, (also known as a tollway, turnpike, pike, or toll highway, especially if it is constructed to Freeway standards Advanced signs tell that trucks must enter the weigh stations when the attached lights are flashing, usually when tolls are collected.
Since the National Highway No. 1 was built with older designs, all weigh stations have older scales so trucks must stop. --------|-|align=center colspan=4| Sijhih-Wugu Elevate Highway Connection |- National Highway No Weigh stations along the National Highway No. 3 have weigh-in-motion scales at 7 central and southern toll stations, but northern stations at Cidu, Shulin, and Longtan have traditional scales where trucks must stop. National Highway No 3 is the second North-South Freeway in Taiwan. Shulin City (樹林市 is a city in the southwestern part of Taipei County, Taiwan ( Republic of China) Longtan may refer to Longtan Taoyuan, township in Taiwan Longtan Dam, dam in China
The Taiwan Area National Freeway Bureau applies for periodical inspections of truck scales every three months. [1] Truckers entering a weigh-in-motion scale are advised not to accelerate or decelerate suddenly, or they may be required to be weighed again. [2]
References
- ^ Taiwan Area National Freeway Bureau: Frequently asked questions (Chinese)
- ^ Taiwan Area National Freeway Bureau: Safe Driving Guide (Chinese)
External links
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