A new range of so-called 'stealth cameras' could appear on some of the UK's busiest motorways in an attempt to 'smooth out' the flow of traffic.
Average speed cameras, dubbed Hadsec3 (Highways Agency digital enforcement camera system), are due to be rolled out on more than 100 miles of busy motorways within the next two years.
The M1, M6 and M25 could all have the new cameras in two years and unlike typical GATSO technology, these units may be grey in colour, making it a lot harder for motorists to spot them.
Yesterday Roger Lawson, of the Alliance of British Drivers (ABD), told The Telegraph: "We are opposed to speed cameras in general.
"The evidence of their success in promoting safety is not good and in reality what is happening now is that the police are using speed cameras to fund their other activities through speed awareness courses."
He added: "If these cameras are grey rather than yellow they are going to be harder to spot and so will have no impact in slowing traffic down. If there is a good reason for the traffic to be slowed down then the cameras need to be as visible as possible."
But a spokesperson for the Highways Agency, which is responsible for rolling out and maintaining the new technology, refuted the ABD's argument, saying that the cameras would be even more visible than before.
"These are not stealth cameras they are more visible that they were before. These motorways are not about speed limits. They are about smoothing the traffic flows and increasing capacity."
The spokesman told The Daily Mail that the new cameras would be signposted and added: "The onus is on the driver to abide by the speed limit."
According to the Highways Agency, the cameras will be part of a new 'smart motorways' system that can automatically control the flow of traffic via variable speed limits.
A similar system is currently employed on the M25 but this will be first time the Highways Agency is looking at the widespread introduction of cameras to target drivers exceeding the maximum allowed speed of 70mph.
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