Delhi–Ahmedabad high-speed rail corridor

Delhi–Ahmedabad High Speed Rail Corridor (Delhi–Ahmedabad HSR) is a proposed high-speed rail line connecting India's capital Delhi with the city of Ahmedabad. When completed, it will be India's second high-speed rail line. It is also said to be an extension of Mumbai–Ahmedabad HSR corridor.

After Lidar surveys were completed in September 2020, the detailed projects report (DPR) was being prepared. On completion of this line, when combined with the Mumbai–Ahmedabad line, two of the most important cities in India will be linked via high-speed rail. This is estimated to cut travel time between the cities from fifteen hours to under five hours.

Construction
After the DPR was prepared, the construction was planned to start in the later half of 2020s. The alignment was chosen to run along with some of the existing railway line and highway in order to reduce the burden of land acquisition as experienced in other railway projects in India, such as the Mumbai-Ahmedabad line and Delhi Metro Pink Line which were significantly delayed due to land acquisition problems. The officials stated that it would take up to three to four years to acquire the land, shift utilities, get several clearances and NOCs for various departments, cut trees, and to complete other works. It would then take another three years to complete construction, moving the opening date to no sooner than 2031.

Stations
The route would originate from Dwarka Sector 21 in Delhi, then it would cross into Gurgaon at Chauma. The line would then run along Dwarka expressway till Ramaprastha City, then it would take a right turn to align with Delhi–Jaipur railway line and crossing at KMP Expressway and will continue along with Rewari Jaipur (via Narnaul-Chomu) Railway Line. The alignmnet will run alongside existing Railway lines to avoid problems in Land acquisition. Earlieer it was proposed to run along with Delhi–Jaipur NH48 Highway. The railway line will cross after Udaipur Station into Gujarat and through Himmatnagar will reach Ahmedabad and further onwards will connect with Mumbai Ahmedabad High Speed Rail Corridor.

2020–2023: Preparations of Detailed Project Report
In February 2020, NHRCL invited bids for a Li-DAR survey in order to prepare final alignment design for the six corridors including Delhi-Ahmedabad. There would be two surveys, with the first one from the satellite imagery data to study the corridor's topography and the following would be an aerial survey to help in finalising the Detailed Project Report (DPR) of the corridor. A year later in January 2021, the tenders for the preparation of DPR of the corridor through a Li-DAR survey had been awarded already according to a NHSRCL spokesperson. and the work on LIDAR survey was in progress. Later in July, the DPR was completed with the route originating from the Dwarka sector 21 in Delhi. A station was proposed in Manesar, Haryana. Officials stated that it would take three to four years to acquire the entire land needed for the project, gain clearances and another three years for completing the construction. On 16 April 2024, the DPR of the corridor was approved by the Railways, three years after the submission. With an average speed of 250 km/h, the 886 km long journey from Sabarmati in Ahmedabad, Gujarat to the Capital would reduce the existing 12 hour journey down to 3.5 hours.