Most drivers know what a railroad crossing sign looks like, but few know why it's shaped the way it is. Here's the story ...

It’s always strangely sad when a piece of pop culture tech becomes obsolete—the demise of, say, VCRs or pay phones is occasion for nostalgic eulogies that call to mind the glory of times gone past.

PHILADELPHIA (CBS) --- There are plans in the works to give PATCO riders better train information, through new variable message signs on the platforms. PATCO intended to install new real-time train ...