TRAFFIC

Why Do Trucks Use Diesel Fuel Instead of Gasoline?

Fasten your seatbelts—this gas-vs.-diesel answer involves compression ratios, spark plugs, and torque vs. horsepower.

Why Is It Called a 'Semi Truck'?

The names ‘18-wheeler,’ ‘big rig,’ and ‘tractor-trailer’ aptly convey the size and scope of the vehicle. ‘Semi’ seems a little misleading. What gives?

Why Do Semi Trucks Have Spikes On Their Wheels?

Semi trucks’ tire spikes mainly protect the wheels’ lug nuts. They also offer drivers a chance to give their trucks a bit of personality.

Traffic Citation vs. Ticket: What's the Difference?

Getting a traffic ticket can be an expensive mistake. But is there a difference between a ticket and a citation? And what about a warning?

Rush hour on Paris's Avenue des Champs-Elysees.

The World's 20 Worst Cities for Rush Hour Traffic

If you think your city is the worst when it comes to gridlock, maybe you're right. Check out the 20 worst offenders of rush hour traffic.

These Are America’s 20 Worst Cities to Drive In

If you can't stand traffic, poor infrastructure, and high gas prices, avoid these American cities on your next road trip.

Pressing this crosswalk button may or may not do something.

Does Pushing the Button at a Crosswalk Actually Do Anything?

No need to jaywalk—your crosswalk signal will appear eventually. But it might not be because you pressed the button.