Low Traffic Neighbourhoods, or LTNs, reduce traffic in residential streets, and improve access for pedestrians and cyclists with dedicated lanes, wider pavements and planters blocking off vehicle access.
Speed limits of 20mph are designed to reduce the severity of injuries suffered in accidents.
Here in Cambridge, the “Sustainable Travel Zone” was just torpedoed, killed largely by a curiously well funded “grassroots” campaign. The biggest public condemnation came from the Conservative minority on council.
In the end, it died because too many from the Labour/Libdem (mostly Libdem) majority flip-flopped on it out of fear of losing the next election to Conservatives.
This is what we get when we elect opportunistic cowards.