The RAC has said there would "negative impact on business efficiency and individual mobility" if a lower speed limit of 60mph was introduced more widely.
While preserving air quality is obviously a paramount concern there will inevitably be a negative impact on business efficiency and individual mobility.
This very powerfully demonstrates the impact that speed has on emissions and many will be surprised to hear that a reduction of just 10mph can have such a significant effect on improving air quality.
Perhaps the Government should be considering reintroduction of incentives to scrap older high polluting vehicles to minimise the need for speed restrictions of the type proposed.
More top news
Nigel Farage added that he was told Donald Trump was his warm-up at the rally in Mississippi.
Dr Dan Poulter suggests that increasing national insurance could be the key to the NHS's funding crisis.
The beloved British high street chain will disappear from Britain's towns on Sunday as the last stores close down.