https://www.npcprom.ru/en/produkciya/level-crossing-traffic-control/maps-m-automatic-non-relay-level-crossing-system
MAPS-M Automatic Non-Relay Level-Crossing System | RDC Promelectronica
MAPS-M is a non-relay system designed for non-guarded level-crossings at single- and double-track lines fitted with any type type of train spacing systems....
level crossing systemmapsautomaticnonrelay