thereafter. This became known as the "ten year test", or alternatively the "Ministry of Transport Test". A fee is applicable to the test and the amount involved for a car when testing was first introduced in 1960 was fourteen shillings (70 new (decimal) pence) plus one shilling (5 new pence) for the certificate. The voluntary period ended on 15 February 1961 and the high test failure rate resulted in the age that vehicles became due for testing being reduced to seven years on 31 December 1961. In 1962, the first commercial vehicle exam was created and a valid certificate was required in order to receive a tax disc, and in April 1967, the testable age for a MOT was reduced to three years. On 1 January 1983, the testable age for ambulances, taxis and vehicles with more than eight passenger seats (excluding the driver's) was reduced to one year. The list of items tested has been continually expanded over the years, including: 1968 – a tyre check 1977 – checks of windscreen wipers and washers, indicators, brake lights, horns, exhaust system and condition of the body structure and chassis 1991 – checks of the emissions test for petrol engine vehicles, together with checks on the anti-lock braking system, rear wheel bearings, rear wheel steering (where appropriate) and rear seat belts 1992 – a stricter tyre tread depth requirement for most vehicles 1994 – a check of emissions for diesel engine vehicles 2005 – introduction of a computerised administration system for issuing non-secure test certificates, and the creation of the 'Automated Test Bay' which differed from traditional testing by installing equipment in the bay to obviate the need for a tester's assistant during the test 2012 – checks of secondary restraint systems, battery and wiring, electronic stability control (ESC), speedometers and steering locks. In recent years there have been attempts to change the frequency of the MOT in the UK, including moving to a test every two years, or changing the age that vehicles become due for testing to four years, instead of three. However, these changes have been dismissed following government consultations, on the grounds of safety. Most recently, it was suggested by former Transport Secretary Grant Shapps, that the MOT again move to a biennial check, to help motorists save money as a result of the 2022 cost-of-living crisis. This plan has yet to be officially taken to consultation