A Swindon motorist has 39 penalty points on his or her licence - the most in Great Britain - but not been banned.
A Freedom of Information request to the DVLA showed 638 drivers in Bristol, Dorset, Wiltshire, Somerset and Gloucestershire have 12 or more points.
Twelve points usually means a temporary ban for a driver unless they can prove it would cause exceptional hardship.
A court decides if a driver is banned and the Magistrates' Association agreed the Swindon case needs investigating.
The DVLA's response to the Freedom of Information (FOI), from BBC West, did not say which offences the penalty points related to and gave no further information about the driver from Swindon.
It explained that although it compiles the figures on court cases involving driving offences it has no influence on verdicts.
Rest of article and link: http://www.bbc.co.uk/news/uk-england-wiltshire-13277186