Quote:
Originally Posted by fotze
I think it's disgusting that it is 30 kph. If we really cared about children it should be 5 kph. 30 kph is 6 times more dangerous to children than 5 kph.
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This is not correct. 30km/h is not some arbitrary number that was chosen but rather it actually reflects data collected and analyzed. From what I could find the risk of severe injury or fatality to a pedestrian at an impact speed of 30km/h is about 10% and it does not really change below 30km/h. At 50km/h the risk of severe injury or fatality becomes 75%.
In terms of safety, from an injury from impact perspective, there is little to no benefit in reducing the speed below 30km/h. There might be a benefit in terms of crash/impact avoidance though.