PROBLEM TO BE SOLVED: To provide a rail provided with a function for accurately detecting an angle of inclination when the rail is inclined.;SOLUTION: On this railway track constituted by supporting the rails 1 on sleepers 2, a plurality of inclinometers 3 are installed along the rails 1 at a fixed interval in the direction of length of the rails 1. A plurality of angles of inclination are obtained by a plurality of inclinometers 3 to calculate amount of settlement of the rails 1 based on these angles of inclination and the interval between the inclinometers 3 and 3.;COPYRIGHT: (C)2008,JPO&INPIT
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