Project: Driver's Field of Vision in Large Vehicles

Reference: S320E/VE

Last update: 19/09/2003 15:01:02

Objectives

The project objectives are to:

* specify a zone around large vehicles within which drivers must be able to see or detect other road users;
* identify technical improvements to the current design of large vehicles to enable them to meet the proposed requirement; and
* propose regulatory amendments incorporating the project recommendations.

Description

A disproportionately high number of road accidents have been identified in the UK involving large vehicles; buses, coaches, HGVs and other more vulnerable road users such as pedestrians, cyclists and motorcyclists. The cause of which was the limited driver's view from these large vehicles.

To understand the physical causes for insufficient or ineffective drivers' fields of view, a representative sample of the UK's large vehicle fleet were modelled, using a computer aided human-modelling system. This technique allowed the assessment of the visual environment of the driver population from 5th%ile female to 95th%ile male.

A number of solutions were proposed including:

* reduce the Class II, rear-view mirror's minimum convex radius of curvature to 1200mm;
* fit an additional Class IV, wide-angle mirror to the off-side of the vehicle, mounted below the Class II, rear-view mirror (the wide-angle mirror currently fitted to the near-side should also be mounted below the Class II, rear-view mirror);
* fit a forward-viewing mirror with a 200mm (minimum) radius of curvature, to the near-side, such that it provides a view to the immediate front of the vehicle;
* mount all near-side mirrors forward of the A-pillar so that they can be viewed through an area of the windscreen swept by the windscreen wipers;
* provide the means to remotely adjust the near-side mirrors from the driver's seated position;
* fit a reversing aid CCTV system; and
* design instrument binnacles to reduce their intrusion into the driver's line of sight to the lower edge of the windscreen.

Trials of proposed mirrors were carried out to access effectiveness of the proposals using different vehicles and drivers and drivers reaction to them.

Contractor(s)

ICE Ergonomics
Holywell Building, Holywell Way, Loughborough, Leicestershire, LE11 3UZ
+44 (0)1509 283300

Contract details

Cost to the Department: £211,990.00

Actual start date: 01 February 1997

Actual completion date: 28 February 2000

Publication(s)

Drivers Field of View from Large Vehicle. Phase 4: Final Report
Author: ICE Ergonomics Ltd
Publication date: 01/11/1999
Unpublished
Source: Contact: geoff.harvey@dft.gsi.gov.uk

Drivers Field of View from Large Vehicles. Phase 2
Author: ICE Ergonomics Ltd
Publication date: 30/04/1998
Unpublished
Source: Contact: geoff.harvey@dft.gsi.gov.uk

Drivers Field of View from Large Vehicles. Phase 3: Appendix 1
Author: ICE Ergonomics Ltd
Publication date: 31/12/1998
Unpublished
Source: Contact: geoff.harvey@dft.gsi.gov.uk

Drivers Field of View from Large Vehicles. Phase 1: Feasibility Report
Author: ICE Ergonomics Ltd
Publication date: 31/07/1997
Unpublished
Source: Contact: geoff.harvey@dft.gsi.gov.uk

Summary of results

  1. The project fulfilled the objectives and produced a report which recommended changes to the field of vision requirements from large vehicles.