EN 50556 Road traffic signal systems*, 2018-09-01 Update
NF P99-071:2015 history
2015NF P99-071:2015 Road traffic signal control by trafic ligths - Standard controller dialogue specification - Diaser
2002NF P99-071-1:2002 Road traffic signal control - Controller standard dialogue specification - Part 1 : DIASER specification (standard dialogue for traffic control equipment).