There is a new suggestion to encourage motorists to stick within the speed limit – the removal of white lines from the centre of urban roads – could prove the most controversial yet.

Transport for London (TfL) studied the effects of road design on driver behaviour and although the widely held view is that street signs and road markings maintain road safety by providing drivers with timely guidance to aid decision-making and reduce uncertainty, there is mounting evidence to suggest there are too many visual intrusions at the road side and this is adding to driver confusion.

Transport for London as part of the review removed road signs and road markings along three of its routes to assess the impact a less cluttered roadside has on driver behaviour, the results of this are not evident yet but another of their studies has already revealed a drop in vehicle speeds along the routes which had road marking removed.

Seven Sisters Road in north London, for instance, saw southbound traffic speed drop by almost 13%, from an average of 32.4mph to 28.3mph.

It is believed that the removal of white lines takes drivers out of their comfort zone as ‘their’ side of the road is no longer clearly defined and so they can’t be confident that oncoming traffic won’t encroach. In turn, this uncertainty makes motorists concentrate more on their driving and speed and is an effective way to make sure they stick within the speed limit.

Decisions on whether to remove white lines will be left to individual local authorities and won’t be considered roads on where markings are used to highlight particular hazards, such as on approaches to complex junctions.

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