Pomona Police investigate the scene of a traffic collision that shut down Towne Avenue during the morning commute on Friday in Claremont. A red van was traveling south on Towne when it apparently sideswiped a Chevrolet SUV causing the van to flip over blocking both southbound lanes. Claremont police assisted and were diverting traffic as late as 9:40 a.m. COURIER photo/Steven Felschundneff