Humping bad for the planet
Road humps slow the traffic but speed up death of planet - Times Online
They damage cars and give drivers a nasty jolt, but now speed bumps have been found guilty of an even worse crime — they are helping to destroy the planet.
The traffic-calming measures double the carbon dioxide emissions and fuel consumption by forcing drivers to brake and accelerate repeatedly, according to a study commissioned by the AA. A car that achieves 58.15 miles per gallon travelling at a steady 30mph will deliver only 30.85mpg when going over humps.
The results, calculated by averaging the performances of the two cars, also showed that reducing the speed limit from 30mph to 20mph resulted in 10 per cent higher emissions. This is because car engines are designed to be most efficient at speeds above 30mph.
A motorist who observed the speed limit on one mile of 20mph road during a daily journey would produce an extra tonne of CO2 in a year compared with driving at 30mph on the same stretch.
That whistling sound you can hear is the your local transport expert weirdy-beardy at the council's brain exploding as he tries to understand this.