Skip to main content

Volvo Trucks aids safety on slippery winter roads

A truck safety solution developed by Volvo Trucks is said to minimise the risks posed to trucks with trailers by slippery winter roads and downhill gradients. Stretch Brake automatically retards the trailer and straightens up the rig on slippery downhill stretches. Stretch Brake is a complement to the rig’s electronic stability program (ESP), another system introduced by Volvo Trucks. While ESP is at its most effective at higher speeds, Stretch Brake is only operational at speeds below 40 km/h. Both syst
December 20, 2013 Read time: 2 mins
A truck safety solution developed by 5874 Volvo Trucks is said to minimise the risks posed to trucks with trailers by slippery winter roads and downhill gradients.

Stretch Brake automatically retards the trailer and straightens up the rig on slippery downhill stretches. Stretch Brake is a complement to the rig’s electronic stability program (ESP), another system introduced by Volvo Trucks. While ESP is at its most effective at higher speeds, Stretch Brake is only operational at speeds below 40 km/h. Both systems contribute to better stability and easier steering.

According to Mats Sabelstrom, brake specialist for Volvo Trucks, Stretch Brake is a kind of low-speed ESP. As the rig approaches a downhill slope, the driver manually activates the system. When he then releases the accelerator, the brakes on the trailer are automatically applied in a pulsated mode all the way down the hill until the gradient levels out and speed can once again be increased.

“Even if the truck driver ultimately manages to control the situation, it can be extremely unpleasant both for oncoming road users and the truck driver, if a rig suddenly veers off its intended course on a downhill gradient,” says Sabelström.

“About 15 percent of the total of 30,000 serious road accidents in Europe every year involve trucks, in a slightly declining trend. With effective brakes, stability systems and collision warning systems we are already helping drivers avoid risky situations in difficult conditions. Stretch Brake is yet another important part of our long-term drive to increase traffic safety and minimise the number of accidents involving trucks,” says Carl Johan Almqvist, Traffic and Product Safety director at Volvo Trucks.

Stretch Brake was introduced in 2012 on Volvo FH trucks pulling drawbar trailers and in 2013 on Volvo FM trucks pulling drawbar trailers. In 2014 it will also become available for Volvo FH and FM semi-trailer rigs.

For more information on companies in this article

Related Content

  • EU rules extend the ‘long arm of the law’
    November 27, 2013
    New EU legislation allows authorities to collect fines from errant foreign motorists even after they have returned to their own country. New European Union legislation means drivers in many Member States can be prosecuted for breaking traffic laws when driving outside their home country. While not all the Member States will not be signing up to Directive 2011/82/EU facilitating the cross-border exchange of information on road safety related traffic offences, for those that do the deadline date to impleme
  • ATRI seeks input on truck platooning
    November 25, 2014
    Working in collaboration with two FHWA-sponsored project teams, the American Transportation Research Institute (ATRI) is conducting research to explore trucking industry perspectives on the use of automated truck platooning, also known as Driver Assistive Truck Platooning. This concept is based on a system that controls inter-vehicle spacing based on information from forward-looking radars and direct vehicle-to-vehicle communications. Braking and other operational data is constantly exchanged between th
  • Transportation applications move to machine vision’s mainstream
    June 11, 2015
    The adaptation of machine vision to transport applications continues apace. That the machine vision industry is taking traffic installations seriously is evident by the amount of hardware and software products tailor-made for ITS applications that are now available on the market. A good example comes from US-based Gridsmart Technologies which has developed a single wire fisheye camera that provides a horizon to horizon view for use at intersections. Not only does the single camera replace four or more in a
  • Toyota proving ground tests co-operative ITS
    February 25, 2013
    Opened in November 2012, Toyota’s intelligent transportation systems (ITS) proving ground is being used to run a number of interactive tests between specially-equipped Toyota vehicles. Located at the company's Higashi-Fuji Technical Centre in Susono City, Japan, the ITS proving ground is a 3.5-hectare site that faithfully replicates a real urban environment, complete with intersecting streets, pedestrian crosswalks, and traffic signals. It is equipped with optical beacons, government-allocated 760 MHz trans