Hi, have you ever been in any sort of traffic collision, or almost been in one?
I was almost in one. How about you?
I have never been in one while driving, only when I was a little kid, but I was actually hit by a truck while walking when I was 5 which was scary
They didn't have traffic in the California Trail
That is for sure. What exactly happened with the california trail though? 
Emigrants crossed the western half of North America