Motorists passing a two-vehicle crash in Stowmarket have also collided.
Police were alerted to the crash on Gipping Way near the Hollingsworth Road junction at 8.30am.
Shortly after officers were called to another collision on the other side of road, a spokesman said.
The East of England Ambulance Service sent one ambulance and paramedics treated one woman in her 20s at the scene.
A spokesman said the woman was shaken but didn’t appear to be injured and wasn’t taken to hospital.
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