Linear reference system based on highway alignment characteristics and its application

linear frame of reference;  Highway alignment;  highway incidents;  Geographic Information System

A linear reference system considering the linear characteristics of highways is proposed, which aims to solve the problems of spatial data redundancy in highway database and easy deviation of highway events on small scale electronic maps. By identifying highway alignment, compressing redundant data and assigning linear coordinates, a linear reference reference is established, and the corresponding linear reference algorithm is established to dynamically establish the relationship between highway events and two-dimensional geodetic coordinates. The practical application in highway management shows that this reference system has the characteristics of simplicity and high precision, and can better meet the actual engineering requirements.