While riding up Collier Canyon Road during the House of Pain ride a county sheriff stopped the group and asked us if we could be mindful of motorists that are behind the group. He asked if we could ride single file when a motorist approachs, so that he/she has opportunity to pass us. He informed us that they receive many calls from the locals about riders congesting the roads, especially on weekends. The trailing riders have the best chance to warn the group that a motorist is approaching. He assured us that we have a right to be on the road as well and was asking all if we'd extend the locals this courtsy.