Driving in the United States is similar to driving in Canada, Australia, and the United Kingdom but different from Europe, Asia, and Africa. It is not uncommon for Americans to drive more than an hour each way to work, and 77 percent of Americans drive alone to their jobs, while an additional 11 percent carpool. Most states allow people to drive unaccompanied once they have reached the age of 16, and all states require that one obtain a driver's license before they may operate a motor vehicle. All states recognize each other's driver's licenses, and Canada will recognize an American driver's license for a short visit. Driving while intoxicated is unlawful in all of the United States.