road test • n. a test of the performance of a vehicle or engine on the road. ∎ fig. a test of equipment carried out in working conditions: he hopes to present a road test of whiskeys and to debate the various aromas and tastes. ∎ a test of a person's competence in driving a motor vehicle that must be passed in order to get a driver's license.• v. (road-test) [tr.] test (a vehicle or engine) on the road. ∎ fig. try out (something) in working conditions for review or prior to purchase or release: we road-tested a new laptop computer.