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Trafiksäkerhetseffekter vid införande av längre och tyngre fordon: en kunskapsöversikt
Swedish National Road and Transport Research Institute, Traffic and road users, Vehicle technology and simulation.ORCID iD: 0000-0002-8242-3407
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.ORCID iD: 0000-0002-4169-610X
2012 (Swedish)Report (Other academic)Alternative title
Traffic safety effects due to an introduction of longer and heavier vehicles : a literature overview (English)
Abstract [en]

This review concerns potential traffic safety effects from the introduction of longer and heavier trucks than those currently allowed in Sweden. For this purpose, a summary of results from accident studies, literature summaries and in-depth studies of fatal accidents involving heavy trucks done in the past few years was made. In addition, a focus group study with truck drivers was conducted and results from a parallel VTI study concerning overtaking of longer trucks have also been included in order to give an overall picture of the possible traffic safety effects associated with the introduction of longer and heavier trucks in Sweden.

Following are some of the recommendations, based on the aspects that have been addressed in this report:

  • Longer and heavier vehicles should mainly operate on main roads where it is possible to overtake heavy vehicles without fear of oncoming traffic. Longer and heavier vehicles should operate as little as possible in urban areas.
  • •Longer and heavier vehicles shall be constructed for good stability, and be equipped with Electronic Brake System (EBS).
  • •Longer and heavier vehicles puts greater demand on tires, brakes and especially maintenance and inspection.
  • •Driver fatigue is a cause of an essential part of single-vehicle accidents with heavy vehicles. Drive and rest times may be harder to keep with the extra-long vehicles if rest areas, which are already today overcrowded along certain roads, are not extended.
  • •The signs of the transition distance on 2+1 roads should be reviewed to possibly reduce the risk of dangerous situations and emergencies caused by overtaking of heavy vehicles.
  • •Additional field studies on two-lane roads are necessary to determine whether there is a higher risk to overtake a 30 m long vehicle compared to overtaking a conventional heavy truck.
Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2012. , 41 p.
VTI notat, 17-2012
Keyword [en]
Lorry, Length, Weight, Dimension, Safety, Accident, Risk, Vehicle stability, Overtaking
Keyword [sv]
Lastbilar, Längd, Vikt, Dimension, Säkerhet, Olyckor, Risk, Fordonsstabilitet, Omkörning
National Category
Transport Systems and Logistics
Research subject
Road: Vehicles and vehicle technology, Road: Vehicle design and construction; Road: Traffic safety and accidents
URN: urn:nbn:se:vti:diva-577Archive number: TRV 2010/9239OAI: diva2:669267
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2016-02-25Bibliographically approved

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Hjort, MattiasSandin, Jesper
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