Nearly 5,000 Jersey driving licences that are due to expire in a matter of days are yet to be renewed.
Fines for driving without a valid licence or insurance start at £300 and could lead to a driving ban.
An expired licence would also make your insurance invalid, with a maximum penalty of each offence at £10,000.
More than 20,000 licences have been renewed in the last three months, but many drivers are still leaving it to the last minute.
Chairman of the Comité des Chefs de Police, Centenier Danny Scaife, says its not worth going to court over.
"People will get stopped in road checks, they will be stopped in routine police checks, they will be asked to produce their licence and that's when they'll discover it's out of date and they will be breaking the law.
"Even though the vast majority of people won't be deliberately doing this, they need to check their licence ASAP, they really do."
Parishes are dealing with applications in the date order received but, to avoid a delay, applications can be made up to 3 months before the licence expires.

Commonwealth Games: Nowacki into 100m breaststroke final
Channel Islands face 'physical' Poland test
Thousands expected at Havre Des Pas Festival this weekend
Price of heating oil and other fuel increase by more than half in a year
Man jailed for importing nearly £600k worth of cannabis in bumpers of his car
Baby born on Guernsey's Marine Ambulance
Drug trafficker who claimed he was the ‘Accredited Dealer' jailed
Jersey men involved in cocaine importation sentenced