401 Oshawa Accident Today Oshawa, ON — A serious multi‑vehicle collision on Highway 401 has forced the closure of all eastbound lanes through Oshawa, prompting an emergency response and significant travel disruptions, authorities confirmed today.
Ontario Provincial Police (OPP) and first responders were called to the scene after reports of a crash involving several vehicles in the eastbound lanes of Highway 401. The collision occurred in the Oshawa area and resulted in a full shutdown of the highway in that direction as crews worked to secure the scene, assist those involved and investigate the circumstances of the crash.
Motorists approaching the area faced heavy delays and were advised to seek alternate routes while the closure remained in effect. Traffic was reported backed up for kilometres as emergency crews attended to the incident and began clearing the roadway.
Police have not yet released details on injuries or whether any serious harm resulted from the collision, and it remains unclear if charges or citations will follow. The investigation into the cause of the crash is ongoing, and more information is expected as authorities compile their report.
Closures on Highway 401 — one of Ontario’s busiest transportation corridors — often cause widespread disruption, and drivers are urged to exercise caution and plan for extended travel times in and around Oshawa.
This incident follows other recent collisions along Highway 401 that have led to closures and emergency responses, illustrating ongoing safety challenges along the critical highway route.
More details will be provided as official updates become available.

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