Tyco came out with the latest installment of their track design in the mid 1980's. It snaps together very easily and can run most any car made for HO scale track. The track ends do have a tendency to break if given enough force. So don't go kicking it around... if you do you'll be back here looking for more...
Mattel, after purchasing Tyco in the mid-90's continues the same track scheme. Must be something good since they haven't change anything but the logo underneath. All Mattel track will work with all Tyco Quik-Clik track.