The 20mph campaign/s and arguments...

20mph throughout London's a bit mental though, surely it'd just lead to more frustration and anger from drivers because they'd be going at a snails pace.

How? the average speed in central London is 7mph, whether for push bike is 14mph, they're already riding at snails pace.

Jamaica Road in Southwark have an average speed of 0.08mph during rush hour, the lowest in the UK.

The difference is that they'll less likely to accelerate rapidly between each traffic light hoping to get to the next one before it turn red, whether a 20mph limit mean that by the time the drivers approach the next traffic light, it'll more likely to turn green (as it does on a push bike).

The other factor is that it'll less likely to become congested when the drivers managed to keep up with their other ahead of them whom got caught in traffic, had they take it easy, there's less traffic jam between each light, something I have notice when I commute from work at 12am in London, after 15 minutes of no cars, suddenly I see 10-15 of them at once going ahead driving at the speed limit that get bigger at each traffic light.

Oh and a lots quieter, it's amazing how much noise pollution vehicles give out at 30mph in comparison.