A child riding in the back seat of a car was killed in a three-vehicle crash on the New Jersey Turnpike in East Windsor early Tuesday morning.
The car was traveling south near milepost 68.4 around 2 a.m. when a tractor-trailer struck the vehicle from behind, State Police said.
The tractor-trailer then rear-ended a box truck before veering off the toll road to the left and hitting a guard rail…