My Thorp T-18 is a project that one person began and another continued-including the rudder build-before it came to me. Looking over the rudder, I now wonder why the builders before me apparently ...

CHARLOTTE, N.C. — Some advocates are now pushing to add a white light to traffic lights, specifically for self-driving cars. The white light would signify that an autonomous vehicle is managing ...

Here’s what it signals—and why it makes a ton of sense.