Your car is not guessing the speed limit. Here's how cameras, GPS, and digital maps work together to figure it out.

Drivers are familiar with all kinds of road signs, even those that don't always make sense. Through the years, reports of silly signs or even those that are mildly inappropriate have gone viral on ...

Add Yahoo as a preferred source to see more of our stories on Google. Image: NARA & DVIDS Public Domain Archive That 15 mph sign glaring at you in your neighborhood plaza? You've probably crawled past ...

Add Yahoo as a preferred source to see more of our stories on Google. An example of what variable speed limit signs look like above a highway in Washington. When icy conditions led to a 133-car pileup ...

Those who have traversed one of the many interstate highways connecting the 48 contiguous states have likely come across a highway or two with two different speed limits posted on the same sign. These ...

A female driver holding up her hands in frustration and confusion - Draganab/Getty Images We've all experienced the anxiety of pulling onto a road and looking for a speed limit sign, only to find that ...

When you drive down any street, one of the most important things you need to keep in mind is how fast you're going, as a fast, reckless driver can cause tremendous harm to others and themself. You ...

Virtually anyone with experience as a driver or passenger of an automotive vehicle in the U.S. is familiar with the difference between speed limit signs with white backgrounds and those with yellow ...