Some of the questions are puzzling..
9. When making right or left turns, a driver should signal _______
before the turn?
A. 100 feet
B. 50 feet
C. 35 feet
D. 5 feet
I signal at an appropriate TIME to warn others of my intentions.
16. Under most conditions what is a safe following distance?
A. 3 seconds
B. 10 seconds
C. 20 seconds
I follow at a safe DISTANCE which depends on speed and
traffic congestion, or lack of it. Knowing your vehicle and its
safe breaking ability is key, plus a little common sense.
The correct answer to #9 is 100 feet. While time is a factor and speed
sensitive, anything less than 100 feet is a bit short under MOST condition.
The people that signal when they already started a turn really piss me of.
As for the time versus distance in #16, they are really tied together. The
proper distance does vary with speed, but you still need at least three
seconds between cars. In city traffic that may be 10 feet, on a fast
highway it can be over 100 feet. The car in front of you is also moving at
about the same speed so time is really more important than distance. You
are making that calculation whether you realize it or not.
I see what you're saying but from a practical point of view, how would
measure a '3 second' separation? City roads have at least 2 lanes and
here (Toronto Canada) have 3, 4, or even 5 lanes - each moving at
speeds. The outermost, the fastest, the innermost, the slowest. The '3
solution' (applying to each lane) is a beautiful solution, but I suspect
derived by a mathmatician, rather than a concensus of users :-)
Everone (hopefully) can judge distance better than time in these
I know I can.
I don't believe you grasp the concept of the 3 sec rule, although they
teach it at a 2 second rule here.
It doesn't matter if you would have 100 lanes, the only lane you should be
concerned about with the rule, is the one you are traveling.
You pick out a fixed object, be it a lamp post, guardrail, sign, tree, or
whatever. When the vehicle in front of you passes that mark, it should take
3 seconds b/4 you cross the exact mark. The higher the speed, the more the
distance between you.
People can't judge/estimate distance, than true time.
All student CDL drivers are taught a 4 second rule for semi trucks. Doesn't
mean all follow the 4 second rule.
When you do that, you're eyes estimate the distance - and it's just the
same with a moving object, like the vehicle in front of you - it's
Estimating when a moving object ahead of you is parallel to some
fixed object is much more difficult.
Normal reflex time is near to a second, I would guess, making a 3 second
separation into a 2 second separation.
60 mph is the same as 88 feet per second, so a two second separation is
some 176 feet. Just a bit longer than some cars take to brake to a stop.
Now, if you are farting around on a cell phone, you will be up his sphincter
before you can say "bye bye".
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