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Longer Heavier Vehicle
Longer Heavier Vehicles (LHVs), also called super lorries, is a classification of large goods vehicle (LGV) (formerly Heavy Goods Vehicles, HGVs) in the United Kingdom. LHVs are not presently allowed to operate on UK roads, being longer and/or heavier than the legal limits, which as of 2009 allowed LGVs up to a maximum of 6 axles and of fully laden vehicle weight, and a maximum overall length of for articulated lorries, or for drawbar lorries.
Since the early 2000s, some haulage companies in the UK had been investigating potential LHV designs and lobbying for a change in the law. Various types of LHV exist, and most of the larger types involve using extra axles, and different trailer arrangements, forming so called road trains. LHVs are supported by some hauliers as a way to increase productivity and reduce costs. Their introduction however faces opposition from rail freight, road safety and environmental groups, who want a general reduction in road traffic, and from portions of the public over general safety and quality of life issues.
In 2005, some companies unsuccessfully applied to the Department for Transport (DfT) for permission to be able to trial their prototype vehicles. In November 2006, the DfT launched a desk based study into the potential impact of a multitude of LHV options on the UK road transport sector, and the wider economy and environment in general, looking at options ranging from simply extending existing lengths and weights of articulated and drawbar lorries, up to allowing 11-axle, long, fully laden weight vehicles. In June 2008, based on the study's conclusions, the legalisation of most types of LHV was postponed indefinitely, due to concerns over the effect on the rail freight sector, and the need for infrastructure and other changes, although a further investigation into the LHV option of extending the length of articulated lorries, to create Longer Semi-Trailers (LSTs), was begun in June 2009.
Despite the 2008 DfT ruling on LHVs, Lincoln based haulage company Denby Transport, one of the most active proponents of LHVs who had developed their own long Denby Eco-Link LHV, is attempting to have their vehicle legalised at , under an existing UK legal loophole dating from 1986.
==Background==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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