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An auto latch system for use with a transport vehicle having a ramp that is pivotable between a transport disposition and an extended disposition. The auto latch system includes a latch assembly operably coupled to a transport vehicle bed. A ramp engagement assembly is operably coupled to the ramp.

An auto latch system for use with a transport vehicle having a ramp that is pivotable between a transport disposition and an extended disposition. The auto latch system includes a latch assembly operably coupled to a transport vehicle bed. A ramp engagement assembly is operably coupled to the ramp. The latch assembly automatically engages the ramp engagement assembly during pivoting of the ramp from the extended disposition to the transport disposition.

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An auto latch system for use with a transport vehicle having a ramp that is pivotable between a transport disposition and an extended disposition. The auto latch system includes a latch assembly operably coupled to a transport vehicle bed. A ramp engagement assembly is operably coupled to the ramp.

An auto latch system for use with a transport vehicle having a ramp that is pivotable between a transport disposition and an extended disposition. The auto latch system includes a latch assembly operably coupled to a transport vehicle bed. A ramp engagement assembly is operably coupled to the ramp. The latch assembly automatically engages the ramp engagement assembly during pivoting of the ramp from the extended disposition to the transport disposition. r includes a flange extending from the lip member, with the flange extending from the lip member configured to be connected directly to the drain pipe with mechanical fasteners. 8. The headwall assembly of claim 1, wherein the longitudinal walls of the base member are connected together by a plurality of cone shaped connectors extending from one of the longitudinal walls to the opposing longitudinal wall. 9. The headwall assembly of claim 8, wherein the cone shaped connectors define cone shaped recesses in the surface of the longitudinal wall, and the headwall assembly further includes a plurality of cone shaped plugs configured to engage the recesses defined by the connectors. 10. The headwall assembly of claim 1, wherein the top end of the base member defines a circumferentially extending recess and the lid member includes a depending lip configured to engage the recess such that the lid member snap fits onto the base member. 11. The headwall assembly of claim 1, wherein the base member, the drain pipe adapter, and the lid member are made of plastic. 12. The head wall assembly of claim 1, wherein the lid member includes integrally formed projections for attaching light reflectors to the lid member. 13. The headwall assembly of claim 1, further comprising a unitary wall member configured for attachment to one of the end walls of the base member, with the wall member formed by two longitudinal walls and two end walls defining an opening extending through the wall member for receiving filler material into the wall member. 14. The headwall assembly of claim 13, wherein at least one of the end walls of the wall member and at least one of the end walls of the base member are configured to connect together with a tongue-in-groove connection. 15. The headwall assembly of claim 13, further comprising a second lid member configured to engage a top end of the wall member and enclose the opening extending through the wall member. 16. The headwall assembly of claim 13, wherein the lid member configured to engage the top end of the base member is replaced by a second lid member formed to engage the top end of the base member and a top end of the wall member and enclose the respective openings defined in the base member and the wall member. 17. The headwall assembly of claim 13, wherein the base member, drain pipe adapter, lid member, and the wall member are made of plastic. 18. The headwall assembly of claim 14, wherein the headwall assembly includes a pair of wall members each configured to connect to one of the end walls of the base member. 19. The headwall assembly of claim 18, wherein the end walls of the wall members are configured to connect to the end walls of the base member with tongue-in-groove connections. 20. A headwall assembly for supporting a drain pipe, comprising: a unitary base member having two longitudinal walls with the longitudinal walls and end walls defining an opening extending through the base member for receiving filler material into the base member with the base member further including a sleeve extending between and connecting the longitudinal walls, with the sleeve defining an aperture extending through the longitudinal walls; an annular drain pipe adapter configured to be received in the sleeve and having an inner diameter sized to receive the drain pipe; a unitary sectional member configured to engage a top end of the base member, with the sectional member having two longitudinal walls and two end walls defining an opening extending through the sectional member for receiving filler material into the sectional member; and a unitary lid member configured to engage a top end of the sectional member and enclose the top end of the sectional member. 21. The headwall assembly of claim 20, wherein the sleeve connecting the longitudinal walls of the base member includes a flange extending outward from one of the longitudinal walls of the base member. 22. The headwall assembly of claim 21, wherein the flange