1) Automotive safety technology
Found on
https://www.crosswordclues.com/clue/roll-cage
A roll cage is a specially engineered and constructed frame built in (or sometimes around, known as an exo cage) the passenger compartment of a vehicle to protect its occupants from being injured in an accident, particularly in the event of a roll-over. There are many different roll cage designs depending on the application, hence different racing...
Found on
http://en.wikipedia.org/wiki/Roll_cage
No exact match found.
