| A portable retractable spike tyre deflating 
              system that is easily deployed by an officer rolling the unit onto 
              a road surface. It can lie in traffic with its spikes retracted 
              without obstructing the normal flow of traffic.  When the target vehicle approaches, the 
              operator raises the tyre deflating spikes from a concealed remote 
              location and safely terminates the pursuit. Only the target vehicles 
              tyres are deflated at a controlled rate and the remaining spikes 
              are immediately retracted to prevent unintentional spiking of other 
              vehicle tyres.   |