Road Humps and 20 mph Speed Limits

Debate between Stephen Crabb and Iain Duncan Smith

Tuesday 5th December 2023 Westminster Hall

[Stephen Crabb (Preseli Pembrokeshire) (Con)]

My right hon. Friend is making a very strong argument. A great many people in Pembrokeshire and elsewhere have a lot of sympathy for slower traffic speeds, particularly in built-up areas outside schools, for example. However, does my right hon. Friend agree that the Welsh Labour Government have made two mistakes? They have got themselves into such a mess with their default, blanket 20 mph policy in Wales. First, they do not understand that what people want more than anything is proper enforcement of the existing 30 mph zones. Secondly, they are not trusting the local councils, which know their communities best, to come up with appropriate schemes in their local areas.

[Sir Iain Duncan Smith]

I am a long way from Wales, but I take my right hon. Friend’s point about decisions being taken in an arbitrary manner and sometimes in pursuit of a wider political objective. I simply say that his comments have been noted, and I am sure that the Minister will consider them when he winds up the debate. I agree about making sure that local authorities—and even wider authorities such as the Mayor of London or the Government in Wales—consult properly and discuss with local residents their needs and concerns. Their consideration is important in the application of these measures in their areas.

Too many Londoners in my constituency and elsewhere are struggling on main roads that have rapidly been brought down from 40 mph to 20 mph. The lower speed limit means that there is almost invariably some focus on the speedometer rather than on the road, because people are concerned that they cannot afford the fine. This may seem apocryphal, but taxi drivers are saying that they are moving out of their line of work simply because it is becoming impossible for them to navigate this process, especially taking into account some of the calming measures that have been over-instated throughout the city, where some of the roads they use are now blocked, even for some of the residents.

The important point, which my right hon. Friend the Member for Preseli Pembrokeshire (Stephen Crabb) raised, is that enforcement can be lawfully carried out only by the police. The police are already under pressure, so it is difficult to see how the measures will not be abused, even when they are so little applied. The cost of the cameras alone is enormous. The extension of the 20 mph speed limits on main roads is affecting police workload.

I turn to a major issue in my constituency and, I believe, elsewhere. Speed bumps can be useful traffic-calming measures at times, but they are also extremely disruptive for residents, cyclists and emergency service vehicles in places where they may not necessarily need to be applied. My constituents have been genuinely affected by the roll-out of the 20 mph speed limits, combined with speed humps and the associated speed reduction measures in London. I know that I am not alone; many colleagues experience similar constituency issues.

Since the implementation of speed humps in residential areas, constituents have regularly raised with me the damage done to buildings by vibration transfer, such as cracking, possible subsidence, the long-term effects of the obstructions on local infrastructure, the increase in poor air quality, and emissions from vehicle engines, tyres and brake pads. Transport for London reports that in 2018, 75% of road transport particulate emissions came from tyre and brake wear. It is worth pointing out that many drivers naturally accelerate away from a speed hump, brake hard when they arrive at another, go over it and carry on. The emissions from brake pads and heavily used brakes are much greater than those coming out of the tailpipe of a diesel or petrol car. In a way, in the over-application—I stress the “over”—of these kinds of speed reduction measures, we are slightly contradicting our efforts to get pollution down.