AUTOGRAPH TRACK GEOMETRY MEASURING TROLLEY: MEASURING VERTICAL AND HORIZONTAL TRACK GEOMETRY PROFILES

Autograph is a lightweihgt portable track geometry surveying system, the powered unit of which comprises two discrete track geometry measuring systems which enable both vertical and horizontal track geometry profiles to be recorded in a single continuos site traverse. This article looks at the measurement of horizontal and vertical track geometry profiles, subsequent data processing, and potential applications of autograph.