That depends on what state they're driving in. Some states (such as California) are especially stringent about a driver's logbook showing a lower average speed than the speed limit. Others, not so much. In a state where the terrain is relatively flat, you'll tend to have a higher average speed than a state which has lots of hills or mountains.
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Average MPH? There really isn't a "legal" average MPH.
Say you're hauling Budweiser. If you haul it out of Columbus, Ohio, your average MPH is going to be higher than if you haul it out of St. Louis because the place you pick it up from in St. Louis is farther from the Interstate than the place you pick it up from in Columbus. More city driving equals a lower average MPH.
You can legally drive 11 hours in a 14-hour period every day. How fast you go depends on where you are.
Legally, NO
No, the Queen is not legally required to own a driver's licence to drive.
Not in Texas.
To drive LEGALLY you must be the minimum age in your state.
It is not legal to drive with a foreign driver\'s license in the US if you have a suspended Florida driver\'s license. You will need to resolve the suspension in order to drive legally.
Yes, as long as the other person is a legally licensed driver.
Not legally - but that doesn't appear to be a problem. If you have an international driver's license then you can legally drive using that license.
No. You cannot legally drive so they would not cover you.
No. A driver on a learner's permit must be supervised by a licenced driver of legal age, and they're required to be in a condition where they could legally drive themselves. If you're too drunk to legally drive the vehicle yourself, you're too drunk to be a supervising driver.
Yes, if you have your driver's license then you can legally drive more than one person in the car with you.
up to 14 or 15 hrs a day
Not legally. You need a valid driver's license and insurance.