Cul-de-sacs in 1-family neighborhoods are the darling of developers and city planners because the restricted access discourages through-traffic and slows vehicles. These are seen as advantages for child safety and aesthetics. Fire officials limit the length of cul-de-sacs because of the obvious disadvantages for emergency vehicles. Since sprinklered homes reduce the demand on the number of firefighters and apparatus, many fire officials allow longer dead-end streets when sprinklers are installed.