Tony Shearman tries riding a prototype ‘Ultra’ bike, fitted with a sonic echo-location device which warns blind riders about obstacles by emitting pulses through the handlebars listen on
http://www.bbc.co.uk/programmes/galleries/p01chv39
Tony Shearman tries riding a prototype ‘Ultra’ bike, fitted with a sonic echo-location device which warns blind riders about obstacles by emitting pulses through the handlebars listen on
http://www.bbc.co.uk/programmes/galleries/p01chv39