ABSTRACT
The problem of harmonization and validation of train speed restrictions represented in sources of various formats and railway transport instructions is investigated. Harmonization is carried out by ontological means. The ontology integrates information from the following sources: databases, station drawings, and natural language regulations. The ontologies of the data source and the railway model arc enriched with concepts for classifying tables of speed restriction warnings and track defects. Methods and software have been developed for processing tabular format data using automated tools for data wrangling and extraction from sources of various types. Implicit knowledge in the tabular representation of speed restrictions is used to validate these tables and classify them. Semantic checking is canted out using formalized regulations for the maintenance of the track, track works, and automated issuance of speed restrictions warnings. The usage of the ontology will improve the safety of train traffic control by checking the compliance of the speed restrictions and track defects, timely cancellation of restrictions, and checking the validity of manual data entry. The method is illustrated by the 270integration of data sources such as railway switch and track inspection records and lists, warning records books, and forms for train drivers.
