information about penalty points for traffic violations such as speeding will be held only on dvla 's database , and will have to be checked online , by post .
but motoring groups fear the switch to a fully online system will make it more difficult for car hire firms which want to check a motorist 's details .
but fears are growing that the ` muddled ' introduction of the new rules will mean people could be turned away because many car hire firms abroad will have to log on to the dvla website the day before .