Originally Posted by q`Tzal
You have valid points but seem fixated on the speed issue.
Let me expand your frame of reference: Unsafe at Any Speed.
speed is a factor because if you're going 15 mph you'll be able to stop when you bump into something and not have a very high risk of killing it... you also have a lot more time to look around and see any potential conflicts...
but yes, cars mixed with other modes are just inherently dangerous...