Implementation of transport projects in Tajikistan and Kyrgyzstan is especially complicated because most of the roads are mountainous, which means tunnels will be required and construction and maintenance will take place in adverse conditions. In terms of railway transport, the planned implementation of 13 development and electrification projects includes the Angren-Pap, Maroqand-Qarshi, Qarshi-Termez and Maroqand-Bukhara rail lines. The plan envisages measures to build and rehabilitate roads and railways, logistic centres and communications. The country also plans to develop a 920-km route going from Uzbekistan through Kyrgyzstan to China (Andijan-Osh-lrkeshtam-Kashgar).