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Rancho Cucamonga, CA (July 28, 2026) — A collision involving two or three vehicles blocked part of the eastbound Interstate 210 near Carnelian Street in Rancho Cucamonga on Tuesday afternoon, according to dispatch records. A reporting party described a white Honda Civic, a white Toyota Highlander, and a possible third vehicle as involved.
All of the vehicles ended up on the right shoulder, and lane 3 was blocked, according to dispatch information. A gray Scion was later reported blocking the carpool lane as well.
The extent of the injuries has not been confirmed. Lanes were reported clear by around 3:55 p.m., with those involved relocated to the center divider.
The cause of the wreck remained unclear as this report was filed. We hope everyone involved is safe.
Why a Blocked HOV Lane Slows an Entire Freeway?
HOV lanes usually sit at the far left of a freeway and have limited entry and exit points, marked by dashed or double yellow lines. When something blocks that lane, drivers can’t just casually move over the way they might in a regular lane, since crossing at the wrong spot means driving over a solid line meant to keep HOV traffic separated.
This setup can turn a single blocked lane into a bigger slowdown than expected. Vehicles already in the HOV lane may have to wait for the next legal crossing point before merging into general traffic, backing up everyone behind them in the meantime. Regular lanes then have to absorb that extra traffic on top of their normal volume.
Drivers who notice a blockage ahead in the HOV lane are generally better off merging into a regular lane as early as the striping allows, rather than waiting until they’re right next to the blockage. Planning the merge early also gives surrounding drivers more time to adjust and make room.
