<span style="color: #222222;">Indian Railways has started the New Year by achieving a landmark to enhance the maximum speed to 130 kilometres per hour for 1,280 km length out of 1,612 Km in Golden Quadrilateral – Golden Diagonal route. This covers the entire GQ-GD route over South Central Railway, except Vijayawada – Duvvada section, where signaling upgradation work is in progress.<br />''<br />''The Ministry of Railways said that the enhanced speed limits could be achieved due to the systematic and planned strengthening of track and its infrastructure by removing bottlenecks in these sections at a fast pace. This included heavier rails, laying of 260 meters long welded rail panels, improvement of curves and gradients among others.</span><br />