For drivers used to fixed numbers on every signpost, the idea of “unlimited” roads can sound like a myth. In reality, it ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

If you're driving between states this holiday season, watch out for speed limits different than you're used to.

While the rest of the world utilizes a different system for determining its roads' speed limits, America continues using ...

If you’ve ever been on a road where the speed limit feels artificially low or surprisingly high, you’re not alone. For decades, many states have leaned on a single formula to decide how fast cars ...

During World War II, the United States imposed what it called a Victory speed limit, lowering the speed limit to 35 mph. This was to aid the war effort, conserving gasoline and rubber for the battle ...

Rose Hammond pushed authorities for years to lower the 55 mph speed limit on a two-lane road that passes her assisted living community, a church, two schools and a busy park that hosts numerous youth ...

Digital signs flashing different speed limits are starting to pop up on Texas highways. They're part of a new initiative in ...

Central Indiana drivers will see new speed limits on most of Interstate 465 starting on July 1. State lawmakers approved a bill earlier this year that raises the speed limit on I-465 from 55 to 65 ...

Rose Hammond pushed authorities for years to lower the 55 mph speed limit on a two-lane road that passes her assisted living community, a church, two schools, and a busy park that hosts numerous youth ...