Honorary Police have reported 12 drivers in a single morning ignoring a road closed sign on Bagatelle Road in St Saviour.
They face a fine of up to £200 at a Parish Hall Enquiry.
The dozen motorists were caught during Monday morning's rush hour (16 February).
Roadworks mean there is currently no access onto Bon Air Lane and Wellington Road.
Honoraries say the carriageway is blocked, and cars ignoring the sign are then having to turn around into oncoming traffic,
"The junction is closed for safety and not merely to inconvenience your journey."
Officers say their patrols will continue this week to stop and report drivers ignoring the temporary road layout.
"Please obey the Highway Code and avoid getting a fine."
More security for Jersey renters and landlords from today
New plans for £110M Fort Regent revealed
Homelessness in Jersey decreased at the end of last year
Minister shares travel concerns with UK Home Office
Jersey saves almost £45M through external workforce cuts
Bid to expand generation-spanning Jersey dairy farm
Bergerac returns this week at a wedding... with a dead groom
New regulations will 'raise the bar' in protecting networks from cyber criminals
