1 Hurt After 3-Vehicle Hwy. 401 Crash Near Oshawa-Clarington Border

1 person has been taken to hospital with minor injuries following a 3-vehicle collision on Highway 401 near the Oshawa-Clarington border on April 29, 2026.

What Happened?

• The incident took place in the westbound lanes of the highway at Harmony Road just after 9:10am ET on April 29.
• A photo of the scene shows crews clearing a diesel spill from a transport truck that was involved in the crash.
• All westbound lanes of the highway were temporarily closed at Courtice Road.

Collison / Hwy Closed:
– #Hwy401 WB at Harmony Rd. #Oshawa
– Time: 9:12 a.m.
– 3 vehicles involved
– One driver transported to hospital with minor injuries.
– A CMV (straight truck) spilled diesel across all lanes.
– #Hwy401 WB is closed at Courtice Rd. for clean up
– Expected… pic.twitter.com/oa5Y3U2lUx

— OPP Highway Safety Division (@OPP_HSD) April 29, 2026

Investigation Updates

The cause of the collision remains under investigation. It’s unclear if charges are pending.

🔔 Anyone with information on the incident, including cellphone or dashcam footage, is asked to contact the OPP.

Car Accident Near You? What to Do

Following an incident like this in Oshawa, you should:

1. Avoid the accident area so that officials can safely investigate.
2. Reduce speed appropriately when passing emergency vehicles.
3. Remain vigilant when travelling past the accident area.

Your Rights After a Car Accident in Oshawa

If you’re injured in a car accident in Oshawa — whether as a driver, passenger, cyclist, or pedestrian — you may be entitled to:

• Accident benefits under Ontario’s Statutory Accident Benefits Schedule (SABS).
• Additional compensation through a personal injury claim against the at-fault driver.

⚠️ IMPORTANT: Ontario imposes strict timelines — some insurer deadlines are days after an accident. Speak to an Oshawa personal injury lawyer at Samfiru Tumarkin LLP before accepting a settlement.