b'GENERAL INFORMATIONSafety End Treatment (SET) structures are a type of precast concrete retaining wall that is used along roadways to terminate stormwater piping that installed under roadways or driveways. The Safety End Treatment (SET) prevents soil erosion and help support the driveway.Very common in rural areas, driveways that cross an open ditch require SETs. Stormwater piping is placed below these roadways or driveways to createa continuous waterway. SETs are normally installed in pairs; at the INLET andthe EXIT of this piping.As an important safety feature, the SET can be equipped with galvanized steel rails on top of the structure to provide a safer embankment so that an out-of-control oncoming vehicle could be deflected away from the concrete structure. The SET equipped with rails saves lives. Typically, the county or the state will determinethe specifications for SET structures.Optional features for SETs include multiple pipes configurations, transverseor parallel safety rails, trash screens, and flap valves.142'