Nova Scotia RCMP said the collision happened just after 3 p.m. southbound between exits 6 and 7.
Police say a 2011 Toyota Corolla was travelling north on Highway 102 when it crossed the centre median and entered the southbound lane, striking another vehicle head-on.
One person is dead and at least two more are injured after a two-vehicle collision on Highway 102 near the Halifax airport on Tuesday afternoon.
The 34-year-old woman who was pronounced dead at the scene was a passenger in the Corolla.
There were two occupants in the southbound vehicle and both the driver and passenger were taken to hospital with serious, non-life threatening injuries.
Three of the four injured people were taken to hospital via LifeFlight helicopter. Police say the 50-year-old woman who was driving, along with a 20-year-old female passenger sustained non-life-threatening injuries.
An RCMP crash analyst examined the scene on Tuesday afternoon, and the highway was closed for eight hours during the investigation.
The cause of the collision is under investigation.
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