road test
noun /ˈrəʊd test/
  /ˈrəʊd test/
 - a test to see how a vehicle functions or what condition it is in- The car was won praise in road tests for having good grip and handling.
- (figurative) Propose a theory, give it a road test, see how it does.
 
- (North American English) (also driving test British and North American English)a test that must be passed before you are qualified to drive a car, etc.