COMMENT: A pedestrian hit by a car travelling at 30km/h has a 10 per cent chance of being killed. If the vehicle is moving at 50km/h the odds of a person dying rise steeply. At the traditional urban speed limit, the odds of a fatal outcome for a pedestrian struck by a car is 80 per cent.
These odds have been advanced as one of the arguments behind a plan to impose a 30km/h speed limit in the Auckland central business district. What is precisely meant by the CBD has yet to be defined by it is generally taken to be the area bound by the
motorways and the harbour edge.
Few of the serious and fatal accidents in Auckland over the last few years have occurred in the CBD. Most have been recorded outside the city's most built-up area, and on arterial roads where traffic moves more rapidly.
Any measure which makes roads safer should be adopted where practical. But what might be effective on the city fringes is not necessarily the right policy
for downtown.
There is clearly a momentum behind the push for a new speed limit in the city. It appears to have firm support within Auckland Council and Auckland Transport though both the Automobile Association and the Auckland Chamber of Commerce argue the city needs what will deliver the best result.