Abstract: An improved sign post assembly (10) for roadway use is provided wherein a sign post (12) includes a lower section (16) adapted for anchoring to the earth, a mating upper section (20) and a magnetic coupling assembly (24) for maintaining the sections during normal use while permitting breakaway of the upper section (20) when the host (10) is struck by a vehicle. Preferably, the coupling assembly (24) includes a magnetic body (26) and a corresponding component (28) which is magnetically attracted to the body (26). In order to cause breakaway in a predetermined direction, the coupling assembly (24) has mating surfaces for the body (26) and component (28) which are in a stairstep configuration.

Abstract: An improved sign post assembly (10) for roadway use is provided wherein a sign post (12) includes a lower section (16) adapted for anchoring to the earth, a mating upper section (20) and a magnetic coupling assembly (24) for maintaining the sections during normal use while permitting breakaway of the upper section (20) when the host (10) is struck by a vehicle. Preferably, the coupling assembly (24) includes a magnetic body (26) and a corresponding component (28) which is magnetically attracted to the body (26). In order to cause breakaway in a predetermined direction, the coupling assembly (24) has mating surfaces for the body (26) and component (28) which are in a stairstep configuration.

Abstract: A breakaway sign post assembly (30) including a sign support post (32), an anchoring post (34) and a breakaway collar (100). The breakaway collar (100) includes a sidewall (102) which surrounds the sign support post (32). The sidewall (102) includes at least one substantially vertical line of weakness (120) configured to facilitate a portion of the sidewall (102) to give way. The sidewall (102) retains the sign support post (32) in a manner to define a fulcrum (134) about which the sign support post (32) turns when a vehicle impacts and exerts a lateral force at an impact location, with the fulcrum (134) being positioned below the impact location so that the support post (32) will swing generally away from the vehicle.

Abstract: A breakaway sign post assembly (30) is disclosed as including a sign support post (32), an anchoring post (34) and a breakaway collar (100). The breakaway collar (100) includes a sidewall (102) which surrounds the sign support post (32). The sidewall (102) includes at least one substantially vertical line of weakness (120) configured to facilitate a portion of the sidewall (102) to give way. The sidewall (102) retains the sign support post (32) in a manner to define a fulcrum (134) about which the sign support post (32) turns when a vehicle impacts and exerts a lateral force at an impact location, with the fulcrum (134) being positioned below the impact location so that the support post (32) will swing generally away from the vehicle.

Abstract: A breakaway sign post assembly (30) is disclosed as including a sign support post (32), an anchoring post (34) and a breakaway collar (100). The breakaway collar (100) includes a sidewall (102) which surrounds the sign support post (32). The sidewall (102) includes at least one substantially vertical line of weakness (120) configured to facilitate a portion of the sidewall (102) to give way. The sidewall (102) retains the sign support post (32) in a manner to define a fulcrum (134) about which the sign support post (32) turns when a vehicle impacts and exerts a lateral force at an impact location, with the fulcrum (134) being positioned below the impact location so that the support post (32) will swing generally away from the vehicle.