Control, warning, or like safety means along the route or between vehicles or vehicle trains

BPERFORMING OPERATIONS TRANSPORTING B61Railways B61LGUIDING RAILWAY TRAFFIC ENSURING THE SAFETY OF RAILWAY TRAFFIC

B61L23/00Control, warning, or like safety means along the route or between vehicles or vehicle trains

B61L23/002Control or safety means for heart-points and crossings of aerial railways, funicular rack-railway B61L23/005Automatic control or safety means for points for operator-less railway B61L23/007Safety arrangements on railway crossings B61L23/02for indicating along the route the failure of brakes B61L23/04for monitoring the mechanical state of the route B61L23/041Obstacle detection B61L23/042Track changes detection B61L23/044Broken rails B61L23/045Rail wear B61L23/047Track or rail movements B61L23/048Road bed changes B61L23/06for warning men working on the route B61L23/08for controlling traffic in one direction only B61L23/10manually operated B61L23/12partly operated by train B61L23/14automatically operated B61L23/16Track circuits specially adapted for section blocking B61L23/161using current of indifferent sorte or a combination of different current types B61L23/163using direct current B61L23/165using rectified alternating current B61L23/166using alternating current B61L23/168using coded current B61L23/18specially adapted for changing lengths of track sections in dependence upon speed and traffic density B61L23/20with transmission of instructions to stations along the route B61L23/22for controlling traffic in two directions over the same pair of rails B61L23/24using token systems B61L23/26with means for actuating signals from the vehicle or by passage of the vehicle B61L23/28using non-automatic blocking from a place along the route B61L23/30using automatic section blocking B61L23/32with provision for the blocking or passing sidings B61L23/34Control, warnings or like safety means indicating the distance between vehicles or vehicle trains by the transmission of signals therebetween