The CPEC project emphasises major upgrades to Pakistan's ageing railway system, including rebuilding of the entire Main Line 1 railway between Karachi and Peshawar by 2020; this single railway currently handles 70% of Pakistan Railways traffic. In addition to the Main Line 1 railway, upgrades and expansions are slated for the Main Line 2 railway, Main Line 3 railway. The CPEC plan also calls for completion of a rail link over the 4,693-meter high Khunjerab Pass. The railway will provide direct access for Chinese and East Asian goods to Pakistani seaports at Karachi and Gwadar by 2030.