Vehicle control barrier

Abstract

A barrier adapted to be set up for temporary traffic control comprises a man-portable unit placed on the ground from which a boom, preferably in the form of a reelable tube, can be withdrawn. The boom extends at an oblique angle to the ground in its “down” position and a motor within the ground-standing unit can raise and lower it between that position and an “up” position at a greater angle to the ground in which traffic can pass.

1 . A vehicle control barrier comprising a man-portable unit adapted to be placed on the ground in use of the barrier; an elongate barrier member adapted to project upwardly from said unit at an oblique angle to the ground in a barring position; and said barrier member being arranged in use to be raised and lowered between said barring position and a non-barring position at a greater angle to the ground. 
   
   
       2 . A barrier according to  claim 1  wherein said barrier member is extendible from and retractable into said unit. 
   
   
       3 . A barrier according to  claim 2  wherein said barrier member is in the form of a reelable tube. 
   
   
       4 . A barrier according to  claim 3  wherein said barrier member is arranged to be raised and lowered by pivoting with respect to said unit a reel assembly from which said tube is withdrawn. 
   
   
       5 . A barrier according to  claim 1  wherein said unit is equipped with wheels and a handle to facilitate its transportation by one person. 
   
   
       6 . A vehicle control barrier comprising a reelable tube adapted to define an elongate barrier member to project in a barring position when withdrawn from its reel assembly; and said tube being arranged to be pivoted, when withdrawn as aforesaid, between barring and non-barring positions. 
   
   
       7 . A barrier according to  claim 6  wherein said reelable tube is comprised in a man-portable unit adapted to be placed on the ground in use of the barrier. 
   
   
       8 . A barrier according to  claim 7  wherein said unit is equipped with wheels and a handle to facilitate its transportation by one person. 
   
   
       9 . (canceled) 
   
   
       10 . A vehicle arresting system comprising a barrier according to  claim 1  deployed in the path of oncoming vehicles; a detector for detecting the impact with said barrier of a vehicle which drives through said barrier; and a vehicle arresting device adapted to be deployed in the path of such vehicle in response to the detection of such impact. 
   
   
       11 . A system according to  claim 10  comprising a vehicle arresting device in the form of a net adapted to be laid flat on the ground with one or more transverse rows of upwardly-directed spikes attached to the net at a leading portion thereof. 
   
   
       12 . A system according to  claim 11  comprising a winch adapted to pull said vehicle arresting device across the path of a vehicle in response to the detection of impact with said barrier. 
   
   
       13 . (canceled) 
   
   
       14 . A vehicle arresting system comprising a barrier according to  claim 6  deployed in the path of oncoming vehicles; a detector for detecting the impact with said barrier of a vehicle which drives through said barrier; and a vehicle arresting device adapted to be deployed in the path of such vehicle in response to the detection of such impact. 
   
   
       15 . A system according to  claim 14  comprising a vehicle arresting device in the form of a net adapted to be laid flat on the ground with one or more transverse rows of upwardly-directed spikes attached to the net at a leading portion thereof. 
   
   
       16 . A system according to  claim 15  comprising a winch adapted to pull said vehicle arresting device across the path of a vehicle in response to the detection of impact with said barrier. 
   
   
       17 . A barrier according to  claim 4  comprising a motor within said unit for pivoting said reel assembly. 
   
   
       18 . A barrier according to  claim 7  comprising a motor within said unit for pivoting said reel assembly.