What route from Norfolk State to Thomas Nelson has the least amount of traffic ?
O O O B-SL_SOURCE_IN_GET_LOCATION_SL_POINT_ON_MAP I-SL_SOURCE_IN_GET_LOCATION_SL_POINT_ON_MAP O B-SL_DESTINATION_IN_GET_LOCATION_SL_POINT_ON_MAP I-SL_DESTINATION_IN_GET_LOCATION_SL_POINT_ON_MAP O O O O O B-SL_OBSTRUCTION_AVOID O