What limits does the constitution place on the power of Congress to tax?

1. once you decide that it is safe to move out of traffic, what steps should you follow to ensure safe passage? 2. give some examples where it is unsafe to travel at the speed limit 3. when parking downhill with a curb, what steps would you follow with an automatic transmission? what about manual transmission? 4. what are three things you can do to safely leave a vehicle? ! its due in 3 hours! 100 points to anyone who can at least with one : (