It happened on Route 13 South near School Lane just after 3:30 p.m.
[Ads /]
Action News obtained surveillance video that appears to show two people helping another person following an initial collision.
The two good Samaritans then tried to cross the roadway when they were struck by a silver sedan.
According to police, the striking vehicle immediately stopped after the collision.
Upon arrival, police transported three people to Christiana Hospital.
Investigators say a 36-year-old woman is in critical condition and a 15-year-old boy is stable with a leg injury.
[Ads /]
The third person is also being treated at the hospital but there is no word on the extent of their injuries.
Authorities say a 68-year-old woman was assessed at the scene.
The roadway was temporarily shut down by Delaware State Police as the scene was investigated. The highway has since been reopened.
One man told Action News that the stretch of roadway can be dangerous.
"It's a busy road, it's always people driving fast back and forth on both sides," the man said. "It's kinda hard crossing the street, moving so fast."
For the latest on traffic in the area, check the 6abc Traffic Map.