ISO 13044-2:2021 道路車輛. 重型商用汽車組合用24 V全自動耦合系統(FACS). 第2部分: 50 mm備用輪耦合的電氣和氣胎接口
Road vehicles - Fully automatic coupling systems 24 V (FACS) for heavy commercial vehicle combinations - Part 2: Electrical and pneumatic interface for 50 mm fifth wheel couplings