Dead End signs indicate that the road or street terminates in a cul-de-sac while No Outlet signs communicate that there is no other exit to a cluster of roads. Where Dead End signs are used on single streets, No Outlet signs are usually used on streets that connect to one or more streets in a neighborhood but have a single point of entry and exit.  In practice, many public works departments prefer to use No Outlet signs even for dead-end streets, as indicated in this report about the practices prevalent in Washington.