An OPP vehicle was involved in a crash with a dump truck on Highway 400 in Bradford Friday morning. Provincial police say the officer was responding to an emergency call in the northbound lanes of Hwy. 400 near County Road 88 around 10:30 a.m.The crash occurred when the dump truck was cut off by another vehicle and collided with the OPP cruiser against the barrier.No injuries have been reported. Two northbound lanes are blocked as police investigate and clean up the highway.