Three seconds is considered a safe distance to follow someone at. Here in California the Highway Patrol suggests four seconds.
Any time you are following someone closer than is safe for the conditions, you could get a ticket.
A busy road with many cars means traffic i would think that is the best awnser
1
Infinite
80
it is traffic
aprroximately 120,000 Cars were on the road in 1906 due to the records kept by the Car companies.
there were 200andyourface cars on the road
All vehicles currently on the road are used.
One car length for every ten miles per hour is a rule, two seconds is another rule, but in the rain, 3-5 seconds. Pick out a stationary object on the road as you drive. When the car ahead of you passes that object, start counting; you shouldn't reach that object until five seconds have passed. A good rule is you should feel comfortable about having a smooth stop if that car suddenly brakes hard. If this is for a motor vehicle test, I'd say 3-5 seconds.
a lot
Which roads in which country.
Around 4,200