A central road safety barrier includes modules mutually couplable by means of a bolt which engages holes made in protrusions extending in a longitudinal direction at the ends of the modules. Walls adjacent to the protrusions improve the transfer between the modules of an impact of an errant vehicle on the barrier and improve response to an impact. The safety barrier provides an emergency openable passage. A module may include a wall solidly constrained to an upright and adjacent to the protrusions of the module on a first side of the barrier. An openable passage module has a further wall solidly constrained to a further upright and adjacent to the protrusions of the openable passage module on a second side of the barrier.

Retractable floor barriers are provided that can be quickly opened and closed by pneumatic actuators and operated by the closing and opening of an electrical circuit. The retractable floor barriers can be used at the docks of trains and subway stations to prevent accidental falls therefrom.

A system to improve the management of through traffic and vehicles entering and exiting a multilane roadway. The lanes are separated by at least one lane separator which should not be crossed by traffic along a designated portion of the roadway, such as within a predetermined distance from a roadway entrance or exit. The at least one lane separator may be any lane marking, barrier, or the like. The at least one lane separator can be any length and located anywhere with respect to the lanes.

A heavy-duty barrier, which is movable, comprising a base part, which comprises a ballast, and a fence part attached to the base part. The fence part comprises a fixed bar structure and a rigid connection element, which is movably attached to the bar structure, and which is connectable with a complementary connection element of a neighboring heavy-duty barrier. The connection element comprises an attachment portion movably attached to a bar portion of the bar structure, and a hook portion arranged to be engaged with a corresponding hook portion of the complementary connection element.

A heavy-duty barrier, which is movable, comprising a base part, which comprises a ballast, and a fence part attached to the base part. The fence part comprises a fixed bar structure and a rigid connection element, which is movably attached to the bar structure, and which is connectable with a complementary connection element of a neighboring heavy-duty barrier. The connection element comprises an attachment portion movably attached to a bar portion of the bar structure, and a hook portion arranged to be engaged with a corresponding hook portion of the complementary connection element.

An access control device (1) for blocking or opening a passage (2) for persons or vehicles. The access control device comprises one or two blocking bodies (3, 3′), each arranged on a carrier (4, 4′). Each blocking body (3, 3′) comprises a mechanically reversibly deformable element (5, 5′) which, in a first position, is substantially planar and opens the passage (2) and, in a second position, assumes a curved shape which blocks the passage (2). One or both ends of the deformable element (5, 5′) are connected to an actuator (7). A controller controls the deformable element for transferring them first between the first and second positions. When transferring the deformable element from the first to the second position, either the distance between the ends of the respective blocking body is reduced or, when the ends have a constant distance, the length of the blocking body is increased.

An access control device (1) for blocking or opening a passage (2) for persons or vehicles. The access control device comprises one or two blocking bodies (3, 3′), each arranged on a carrier (4, 4′). Each blocking body (3, 3′) comprises a mechanically reversibly deformable element (5, 5′) which, in a first position, is substantially planar and opens the passage (2) and, in a second position, assumes a curved shape which blocks the passage (2). One or both ends of the deformable element (5, 5′) are connected to an actuator (7). A controller controls the deformable element for transferring them first between the first and second positions. When transferring the deformable element from the first to the second position, either the distance between the ends of the respective blocking body is reduced or, when the ends have a constant distance, the length of the blocking body is increased.

A unidirectionally bendable transmission chain is provided. At a first side thereof, an inner stop plate is fixed between a pair of inner chain plates at both ends of pin shafts, and an outer stop plate is fixed between a pair of outer chain plates at both ends of the pin shafts. Both ends of the inner stop plate are flush with axes of pin holes provided at both ends of the inner chain plates, and both ends of the outer stop plate are respectively provided with extensions beyond the outer chain plates; the extensions of the outer stop plate form a one-sided support for the inner stop plate to prevent the transmission chain from bending toward the first side, thus the transmission chain bends unidirectionally toward a second side opposite to the first side. A hoisting mechanism and a liftable roadblock having the above transmission chain are further provided.

An exemplary crash gate to guard against motor vehicles crossing a roadway in a direction from an attack side to a protected side including a buttress post assembly secured below ground in a first concrete foundation on a side of the roadway, the buttress post assembly having two buttress posts forming a barrier passage, a latch post assembly secured below the ground in a second concrete foundation on an opposite side of the roadway, the latch post assembly having two latch posts forming a latch gap, a barrier with a gate beam disposed in the barrier passage and extending from a buttress end to a latch end, and one of a vertical pin or a hook connected to the latch post assembly and positioned in the latch gap and the other one of the vertical pin or the hook located on the latch end, when the barrier is in a closed position the latch end is located in the latch gap and the vertical pin is positioned outside of the hook.

A bollard device (1) comprising an outer bollard member (2) and an inner bollard member (3) which is provided to be displaceable between a retracted position wherein the inner bollard member (3) substantially extends within an interior space (4) of the outer bollard member (2), and an extended position wherein part of the inner bollard member (3) extends above the outer bollard member (2) wherein the inner bollard member (3) comprises an upper part (5) and a lower part (6), wherein in the extended position the upper part (5) substantially extends above the outer bollard member (2) and the lower part (6) substantially extends within the interior space (4), wherein the lower part (6) of the inner bollard member (3) comprises at least two reinforcement elements (10a, 10b) wherein these reinforcement elements (10a, 10b) form protrusions of the inner bollard member (3).