Connecticut's Stricter Left-Lane Law Is in Effect; Violators Face $88 Fine

Public Act 25-65 spells out that the keep-right rule covers every multi-lane limited-access highway.

Traffic on a multi-lane road at sunset

NEW HAVEN, CT — Connecticut's stricter left-lane law took effect Thursday, Oct. 1, and drivers who linger in the passing lane on the state's multi-lane limited-access highways now risk an $88 fine, the state Department of Transportation says.

Under the law, the left lane is for passing. Drivers may use it to overtake slower traffic, to get ready for a left-hand exit or to go around an obstruction; otherwise they belong in the right or middle lanes, according to CTDOT. The department also tells drivers to move left when needed to let traffic merge, then return right once it is safe.

What Changed Oct. 1 for New Haven-Area Drivers

Connecticut law already told drivers to keep right. Public Act 25-65, passed in the 2025 legislative session, spelled out that the rule covers every limited-access highway with multiple lanes, and its strengthened enforcement began Oct. 1, CTDOT said.

State Sen. Christine Cohen, a Guilford Democrat who sponsored the bill, told Connecticut Public in July 2025 that the old law was too vague. "It says we shall drive in the right-hand lane, but doesn't say anything specifically about left lane camping," she said.

Driving Fast Is No Excuse in the Left Lane

Going faster than the speed limit does not make left-lane cruising legal, Cohen said; a driver who stays in the lane too long without passing can still be ticketed. The law sets no distance or time limit for how long a driver may stay left.

"This is discretionary and law enforcement will be trained accordingly," Cohen said. "There would have to be a clear violation and infraction." She also said the rule would not apply to two-lane highways.

CTDOT's Advice: Pass Left, Drive Right

CTDOT has run a statewide awareness campaign, "Pass Left. Drive Right.," since the fall of 2025 to prepare drivers for the enforcement date. Its advice: if you are slower than the traffic around you, move to the far right lane; do not pass on the right; and if someone ahead is going slowly in the left lane, do not tailgate. Give the driver room and pass once the lane clears. If you are in the left lane, keep to the posted limit and get back to the right as soon as you safely can.

Connecticut's Move Over law is the main exception. When an emergency vehicle has pulled over on or beside the roadway, drivers should slow down and, where they can, shift a lane away, even if that means a short stretch in the left lane.

"Left-lane misuse causes unnecessary tailgating, weaving, and aggressive driving that can quickly lead to serious crashes," Col. Daniel Loughman, commanding officer of the Connecticut State Police, said in CTDOT's announcement of the campaign. "The simple rule is pass on the left, then move right."


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