"More than half of Helsinki’s streets now have speed limits of 30 km/h."
This is the only secret.
People over speeding is what kills.
replies(15):
The main cause of mortal accidents is loss of control, way over attention deficit (depend on the country, in mine its 82% but we have an unhealthy amount of driving under influence, which cause a lot of accident classified under attention deficit. I've seen a figure of 95% in the middle east). The majority of the "loss of control" cases are caused by speed. That's it. Speed make you loose control of your car.
You hit the break at the right moment, but you go to fast and bam, dead. You or sometimes the pedestrian you saw 50 meters ago. But your break distance almost doubled because you were speeding, and now you're a killer.
Or your wife put to much pression in your tires, and you have a bit of rain on the road, which would be OK on this turn at the indicated speed, but you're late, and speeding. Now your eldest daughter got a whiplash so strong they still feel it 20 years after, your second daughter spent 8 month in the coma, and your son luckily only broke his arm. You still missed your plane btw.