摘要:
Compact, readily maneuverable apparatus for picking up and laterally transferring roadway barrier modules includes a vehicle for moving along a roadway barrier and elongated conveyors located at the sides of the vehicle, connected to the vehicle and pivotal between operative and inoperative positions.
摘要:
Compact, readily maneuverable apparatus for picking up and laterally transferring roadway barrier modules includes a vehicle for moving along a roadway barrier and elongated conveyors located at the sides of the vehicle, connected to the vehicle and pivotal between operative and inoperative positions.
摘要:
A crash absorbing guardrail panel assembly including rail panels overlapping at adjacent end portions, an end terminal (30) moving one of the rail panels along the other rail panel when impacted by a vehicle, and braking structure on one of the rail panels (12) engaging an edge of the other rail panel (14) to dissipate kinetic energy during relative sliding movement between the rail panels and absorb impact forces on the end terminal.
摘要:
The invention relates to a method and an apparatus for automatically guiding a machine that picks up and places roadway barrier segments using satellite global positioning and ultrasonic sensors. The machine is guided by both GPS signals and signals based on ultrasonic measurement of distance from the existing barrier segments.