- ... that the Terwilliger curves (pictured), a six-lane section of Interstate 5 in Portland, Oregon, had an average of 100 car accidents per year between 1995 and 2005?
- ... that unlike elsewhere in the United States, traffic on highways in the United States Virgin Islands drives on the left?
- ... that New Hampshire Route 113B is a suffixed route of Maine State Route 113, and it comes nowhere near its implied parent, New Hampshire Route 113?
- ... that though it only contains 4% of the nation's roads, America's National Highway System carries more than 40% of all highway traffic and 90% of tourist traffic?
- ... that although the New Jersey Route 85 freeway was never built, it is still listed in the state's Route Log?