The author feels that the people who drive most at night on unlit roads - the truck and coach drivers - should be provided with the best headlighting that is available, but they often get the worst. It is proposed that for headlamps a 12 volt bulb would be better than the predominantly used 24 volt bulbs, as these would require shorter filaments and therefore would be less likely to sag and go out of focus with the headlamp mirror. Though rectangular lamps with a larger mirror have come into use the author criticizes some truck producers for fitting small rectangular lamps. Some of the 'imitation' four-headlamp sets provided on many trucks and coaches are not completely satisfactory. With so many trucks operating to and fro across the channel the idea of having a built in dual system - one pair of lamps with a dipped beam for Europe and a second pair for the British rule of the road, is put forward. Lists of recommendations are given for how to make best use of the existing equipment and what to fit if original equipment is poor. /TRRL/

  • Availability:
  • Corporate Authors:

    Embankment Press Limited

    Building 59, GEC Estate, East Lane
    Wembley, Middlesex HA9 7TQ,   England 
  • Authors:
    • Davey, J B
  • Publication Date: 1977-11


  • English

Media Info

  • Features: Photos;
  • Pagination: p. 8-9
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00184401
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM