yes, as long as you obtain a visitors license for that state
yes
No, but you should be able to get an international driving permit that would carry some weight. In the US, US citizens can get them at AAA. International driving permits are not good as license substitutes in the country where they were issued. In other words, someone in the US can't get and use one in place of a US license that has been suspended or revoked.
A drivers license number is used to keep up with everyone. This is in every state not just Pennsylvania.
KII MII
"Licence" is the spelling common to Commonwealth countries (Canada, United Kingdom, South Africa, Zimbabwe, etc.". "License" is the spelling used in the United States of America (and may be used in Canada, as well).
HGV drivers need a Category C license. The Category C license is used for drivers of large vehicles not weighing more than 750kg. The vehicle is usually a large truck where the cab is permanently attached to the trailer.
No, a Chinese driver's license cannot be used in California. Drivers from other countries must obtain a California driver's license to legally drive in the state.
As far as I can determine, there is no "international driving permit" that is independent of your drivers license. There are several "international driving permit" forms available from Automobile Associations and such, but these are basically translations of the information shown on your domestic drivers license into several different languages. They must be used in conjunction with your home drivers license; they have no validity on their own.
It's not a bad idea to, as they can be used for purposes of identity theft.
A 7D license is a specific type of driver's license in Massachusetts that allows individuals to operate vehicles designed to transport 10 or more passengers, including the driver, as well as vehicles used for transporting students. It is often required for drivers of vans and other larger vehicles used in school or commercial transportation services. To obtain a 7D license, applicants must pass a written test, a driving test, and meet certain background check requirements.
You must sell 146 cars to keep your license.
Not as long as it is not meant to be used for an unlawful purpose.