Technology can be a useful tool, but we’re often reminded that it’s far from perfect.
In this scenario, we’re talking about GPS.
Bridge strikes, felony arrests and the infamous Smugglers’ Notch are among the GPS-related blunders that reinforce it’s not infallible.
The Sonora Pass, a portion of state Highway 108 through the Sierra Nevada Mountains in California, where elevations exceed 9,000 feet, restricts certain truck traffic due to tight switchbacks and steep grades.
Trucks with more than four axles over 38 feet are prohibited from driving this stretch of the highway, according to Caltrans District 9.
Apparently, one driver’s GPS missed that update.
According to the California Highway Patrol – Bridgeport Division, a truck blocked both lanes of the Sonora Pass near the Leavitt Creek Vista Point on Tuesday, July 14, forcing the closure of this highway for several hours.
Law enforcement said the driver disregarded posted signage and relied on the GPS system instead.
7/14/26: This driver ignored numerous signs and warnings because his GPS said it was okay to take this route. Visit https://t.co/cuWxiMYras for a list of approved legal access routes for trucks and trailers. pic.twitter.com/M14FTz7FEM
— CHP Bridgeport (@ChpBridgeport) July 14, 2026
Caltrans offers a California truck network map on its website, showing the official state truck routes.
Fortunately, this incident didn’t escalate beyond a social media callout.
The truck was cleared, and the highway was reopened to traffic the same day.
However, it could easily have gone the other way.
OOIDA has maintained its position that a driver’s ability to read and obey road signage is a critical safety component.
“Truckers drive 80,000-pound vehicles through all kinds of terrain – steep mountain passes, narrow turns, busy city streets,” OOIDA President Todd Spencer said. “The only thing separating safe trips from deadly ones can be a simple road sign. These signs aren’t suggestions. They’re warnings. They save lives, but only if they’re understood.” LL
More Land Line coverage of news from California.
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