20 to 30 seconds
20 seconds, or as far as you can see down the road.
On city streets drivers should cast their eyes how far ahead?
at least a block ahead
12-15 Seconds
False
When you find such drivers, you should get as far away from them as is humanly possible.
You should see as far ahead as you can. The farther you can see, the more time you have to prepare for whatever your are approaching, and for whatever is approaching you.
You should scan ahead as far as you can see
20-30 seconds
12 to 15 seconds
About one mileActually, it's half a mile.