The United Kingdom driving test is a test of competence that UK residents take in order to obtain a full Great Britain or Northern Ireland (car) driving licence or to add additional full entitlements to an existing one. Tests vary depending on the class of vehicle to be driven. In Great Britain it is administered by the Driver and Vehicle Standards Agency (DVSA) and in Northern Ireland by the Driver & Vehicle Agency (DVA).The minimum age at which one can take a UK driving test is currently 16 for mopeds and 17 for cars (16 for those on the higher/enhanced rate of the mobility component of DLA or PIP). There is no upper age limit. In addition to a driving licence, a Compulsory Basic Training (CBT) certificate may be required before a moped or motorcycle is ridden.Around 1.6 million people sit the practical car test each year, with a pass rate of around 43%. The theory test has a pass rate of around 50%. To become a category B (car) licence holder, candidates pay £23 for the theory test and £62 for the practical driving test.