The author discusses how the wrong design of cambers can play an important part in the causation of an accident. A special study is made of two such accidents, the first fatality being on a right hand bend. An articulated lorry had jack-knifed on coming round the bend and a pedestrian had been killed. As the lorry ended up on the inside of the curve, it must therefore have been going too slowly for the conditions. It is pointed out that had the road not been superelevated this would not have happened. The second accident occurred on a roundabout, on which an articulated lorry overturned onto the island. At first it was believed that a temporary crown had been wrongly designed, but it was found again that adverse camber had been used. Details are given of the superelevation of the roundabout and of the speed of the lorry. Other such accidents have occurred on roundabouts designed in the same way. According to the author, the solution to the problem is to give the straights normal camber and to provide short transition curves to bring out the superelevation. /TRRL/

  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Authors:
    • Leeming, J J
  • Publication Date: 1975-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00127908
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1975 12:00AM