There was a Cabinet meeting of Hammersmith and Fulham Council this evening with a report that showed the astonishing failure of Labour’s 20mph speed limit. They had already retreated from their proposal to have a borough wide limit. But they did apply the limit to many new roads. As I gently warned them given that the police made clear they would not enforce the lower limit it was just virtue signalling – albeit of a pretty expensive variety.
Of course they could put humps everywhere – but that would be an appalling prospect not least due to the increase in pollution that would result.
Anyway the Council’s own survey finds that on road where the speed limit has been cut from 30mph to 20mph the impact has been negligible. Overall they found a reduction in speed of just half a mile an hour. Council officers at this evening’s meeting did not even attempt to claim this was statistically significant. It is very much within the “margin of error”.
Many of the streets where the speed limit had been cut found that average speeds have increased. The Council compared speeds in a selection of roads where the limit was cut in September 2016. It looked at the speeds it measured in 2015 and 2017.
Avonmore Road 14.65mph to 24.73mph – an increase of 10.08.
Clancarty Road 21.8mph to 21.25mph – an increase of 0.55
Dalling Road 22.35mph to 22.645mph – to increase 0.295
Rannoch Road 20.5mph to 27.16mph – an increase of 6.66.
Rivercourt Road 16.65mph to 18.7mph – an increase of 2.045
Rockley Road 22.8mph to 25.4mph – an increase of 2.6
Rylston Road 11.85mph to 26.34mph – an increase of 14.4
Pennard Road 23.5mph to 25.43mph – an increase of 1.93
Some of the other roads where the survey was sampled did see significant reductions in speed – Pearscroft Road recorded a reduction from 31.3 to 17.53 which amounted to 13.77. But they cancelled each other out. So what was the point of it? The upshot is that this gimmick has achieved diddly squat.