In 1990 Wakefield Metropolitan District Council has carried out initial trials to road humps formed from thermoplastic (thumps) as an alternative to standard road humps. These results were encouraging. The thumps were 37mm high and 900mm wide, used a circular profile, and extended across the full width of the carriageway. The Department of Transport (DOT) instigated further trials and a study of other schemes as part of a programme of research to establish a wide and effective range of traffic calming measures. The trials were conducted by the Transport Research Laboratory (TRL). Changes to the Highways Act 1980, which came into effect in July 1992, enabled the Secretary of State for Transport to authorise road hump profiles which do not conform to the requirements of the Highways (Road Humps) Regulations 1990. (Author/publisher)
Samenvatting