Ex-ante estimate is based on 13km new segregated lanes, where only buses are allowed to operate. Measure. Lao-China railway. Sector. Transport. GHG mitigation target. 300 ktCO2e on average per year between 2020 and 2030. Monitoring procedures. Number of passengers and tons of freight transported by Lao-China railway will be monitored on an annual basis by the Department of. Climate Change of the Ministry of Natural Resources and Environment using data provided by the Ministry of Public Works and Transport. Comments.