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Vermont Deploys Chicanes to Block Oversized Trucks on Smugglers’ Notch

State officials move to physical barriers after GPS errors keep trucks stranded on a narrow mountain pass.

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Vermont, USA — State transportation officials announced on September 9, 2026 that temporary chicanes will be placed at the north and south entrances of Smugglers’ Notch to prevent over‑length trucks from entering the route.

Smugglers’ Notch, the winding stretch of Route 108 that climbs the Green Mountains, has long been a choke point for the trucking community. The road narrows to a single lane in several spots, forces sharp hairpin turns, and offers no shoulder for a vehicle that exceeds the width of a standard passenger car. Vermont law already bars single vehicles longer than 40 feet and combination rigs longer than 45 feet, but the scenic appeal of the pass and the reliance on generic navigation apps keep the corridor on truckers’ routes.

Recent data show that despite a cascade of digital and painted signs, trucks continue to be routed through the notch by GPS systems that do not differentiate between a 12‑foot van and a 70‑foot tractor‑trailer. The Vermont Agency of Transportation warns that “no matter what your GPS or your navigation app says, over‑length vehicles cannot successfully navigate the Notch.” Fines for violating the restriction have risen to $1,000, and drivers who cause a blockage can face $2,000 penalties. Lawmakers once tried to hold navigation providers accountable, but the bill stalled in committee. The new chicane plan will use orange barrels and low curbs to physically block the entrance, a setup slated for a one‑ to two‑year trial before any permanent construction is considered. Todd Sears, deputy director of the Operations and Safety Bureau, said the agency completed traffic‑engineering analyses and reached consensus that chicanes are the most viable option.

What This Means for Drivers

CDL‑A drivers and owner‑operators must verify route restrictions before departing, especially when hauling loads that push the 45‑foot limit. Ignoring the chicanes could result in immediate ticketing and a costly tow out of the mountain pass. Fleet managers are advised to update dispatch software with the new physical barriers and to train drivers on alternative corridors such as Route 100 or the I‑89 corridor. OTR truck drivers who rely on real‑time navigation will need to switch to truck‑specific GPS platforms that incorporate height, length, and weight data to avoid the notch entirely. The changes also give drivers a chance to plan fuel stops and rest breaks on routes that stay clear of the restricted area.

Industry Reaction

Trucking associations have expressed frustration that technology continues to steer rigs into an impossible situation. A spokesperson for the Vermont Trucking Association said the state’s patience is wearing thin and that the industry is ready to adopt any tool that prevents a repeat of the weekend closures that have plagued the highway for years. Independent owner‑operators echoed the sentiment, noting that the added fines and delays hurt profitability and force them to re‑evaluate routes that were once considered scenic shortcuts. Some carriers have already begun routing trucks through the nearby I‑89 corridor, even though it adds mileage, because the cost of a $2,000 fine outweighs the extra fuel expense.

Key Points

  • Temporary chicanes will be installed at both ends of Smugglers’ Notch starting September 2026.
  • Vehicles longer than 40 feet (single) or 45 feet (combination) are prohibited by state law.
  • Fines have risen to $1,000, with $2,000 penalties for traffic‑blocking incidents.
  • GPS‑provider liability bill failed to advance, prompting the physical‑barrier solution.

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Photo by Orhan Pergel on Pexels

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Dana Merritt
Freight market analyst and former dispatcher with 12 years at a regional flatbed carrier. Dana specializes in spot rates, load boards, and the economics of owner-operator life.