Last update: 25/06/2004 10:46:16
The project objectives are:
* to identify and explain the factors that limit the braking performance of HGV's (e.g. tyre grip, load retention, vehicle suspension limitations, vehicle stability etc);
* justify the implications of addressing the factors identified above with particular emphasis on the interaction between these factors;
* determine the current level of braking performance in HGV's; and
* propose a programme of testing, for the second phase of this project, that will examine the predominant factors that limit the braking performance of HGV's.
Accident statistics have shown that although the accident rate for HGV's is low, accidents involving this category of vehicle are more likely to lead to fatal injury for the occupants of vehicles from other categories. Additionally, HGV accidents may cause extensive road congestion, even when injuries may be less serious.
The Department is concerned that the standards for HGV braking systems have not advanced as rapidly as that of cars and passenger carrying vehicles. Different theories for this apparent lack of progress have been put forward by the industry and the vehicle manufacturers/designers.
This research will deliver proposals for the examination of the most significant factors that restrict higher levels of deceleration being introduced for HGV's. It will also consider the domino effect, where improvements in one aspect of the design/construction of a vehicle lead to changes in other areas.
This is the first stage of a multi-stage research project. This stage is concerned with a review of the factors that may limit improvements in the braking performance of HGVs. However, it includes a limited amount of testing of typical HGV's in order to assess actual braking performance against the prescribed braking performance of Community Directive 98/12/EC.
Crowthorne House, Nine Mile Ride, Wokingham, Berkshire, RG40 3GA
+44 (0)1344 773131
Cost to the Department: £152,859.00
Actual start date: 02 January 2001
Actual completion date: 23 January 2004
PR/SE/543/02. Factors That Limit Improvements in Commercial Vehicle Brake Performance. Final Report
Author: TRL Ltd
Publication date: 01/05/2004
Source: Contact: firstname.lastname@example.org