LHD Vehicles Blind Spot: Fresnel Lens Report
- Published: VOSA (8/11/2007)
- Authors: Hugh Edwards, Mark Warden, John Fitch, Martyn Pegg
- Date Added: 15 Mar 2014
- Last Update: 15 Mar 2014
The objective of the project was to evaluate whether or not:
• Fresnel lenses could make a contribution to improving left-hand drive (LHD) HGV driver vision to the nearside (offside in the UK); and,
• Fresnel lenses could make a contribution to reducing the number of 'sideswiping' incidents.
The first phase was to collect data before the issue of the lenses - so as to enable the project to determine of the scale of the sideswiping problem generally.
The second phase was to enable the project to determine whether or not there had been any reduction in incidents after the issue of the lenses.
LHD side-swiping incidents decreased by 59% - from 26 per week before the lenses were distributed to an average of 11 subsequently.
In 91% of LHD side-swiping incidents the HGVs did not have a lens fitted.