Average age of passing driving test uk registration#
Average age of passing driving test uk license#

5Ĭontrast sensitivity (CS) testing has been proposed as an additional method for assessing visual function relating to ‘real world’ activities with particular applications in patients with ocular disease. The effects of glare in outdoors conditions does not relate consistently to visual performance indoors.

Disability glare increases with opacification of the ocular media such as with cataract, resulting from light scatter, 4 which casts a veiling luminance and reduces light sensitivity at the retina. 3 The agreement between the standards is complicated by one test being performed indoors in the clinic environment with consistent light levels, and the other outdoors where light intensity will be higher and more variable depending on environmental conditions, with an increased likelihood of glare sources. Where two visual tasks are different, perfect agreement between the two measures would not be expected and we have previously found this to be the case for people with uncorrected refractive error. The addition of the second standard complicates advising motorists of their suitability to drive. The DVLA in the UK gives no guidance on the measurement of ‘6/12 Snellen’ in terms of test chart type and scoring, whereas the methods for assessing the numberplate test are more detailed, in terms of the test conditions, viewing distance and that all figures have to be correctly read for the numberplate to be ‘passed’. The interpretation of the directive and its application in law is at the discretion of each country.

Average age of passing driving test uk license#

2 The directive gives guidance on the licensing of motorists so that the requirements to hold a license are consistent across Europe. 1 The latter standard was introduced in May 2012 to bring the UK into line with an EU directive on driving licensure.

Average age of passing driving test uk registration#

To hold a valid driver’s license in the UK motorists currently have to meet two different visual acuity (VA) standards: correctly read a post-2001 style car registration plate (‘numberplate’) in outdoor conditions and achieve 6/12 Snellen on a test chart. The increased likelihood of failing the numberplate test even though VA is 6/12 or better needs to be considered when advising patients on fitness to drive who have ocular disease such as cataract.

Reduced CS increased the lack of agreement between the two driving vision standards, which likely occurs as the VA test is performed indoors and the numberplate test outdoors. Conclusionįalse-negative and -positive rates were higher than in a previous study with uncorrected refractive error only. The sensitivity of test chart VA <6/12 to correctly predict failure on the numberplate was 61% for Snellen and 56% for ETDRS. Sim-specs reduced VA and CS by ~0.10 logMAR VA per 0.10 logCS. Sixty-two participants wearing sim-specs then had VA tested with Snellen and ETDRS charts indoors, and ability to read a numberplate assessed outdoors as per DVLA regulations. Following evaluation of the influence of sim-specs on VA and CS, levels 2 to 4 were chosen to give a range of VAs on either side of the driving standard of 6/12. Simulation glasses (‘sim-specs’) were used to reduce both high-contrast VA and contrast sensitivity (CS). The agreement between the two tests in the presence of combined reduction in contrast sensitivity and VA was investigated. Individuals with reduced contrast sensitivity may have greater visual difficulties outdoors. The visual standard to hold a UK driver's license since 2012 includes visual acuity (VA) measured indoors and the ability to read a car numberplate outdoors.