Sealdah–New Delhi Rajdhani Express

The 12313 / 12314 Sealdah–New Delhi Rajdhani Express is a Rajdhani class train of Indian Railways which connects the capital of West Bengal, Kolkata to the National Capital of India, New Delhi through Sealdah. It is the third Rajdhani Express class train connecting Delhi and Kolkata and is the second-fastest connection between these two cities by rail.

Overview
Owing to the high demands of the passengers plying between Delhi and Kolkata and to ease down the existing pressure of bookings on the Howrah Rajdhani Express, Indian Railways decided to introduce another Rajdhani class train between these two cities. Since Howrah Division of Eastern Railways already had two existing Rajdhani Express trains, thus Sealdah Division of Eastern Railway was awarded with third Rajdhani Express to West Bengal. Hence on the annual railway budget of FY 2000-01, the then Minister of Railways, Mamata Banerjee, announced the starting of the Sealdah - New Delhi Rajdhani on bi-weekly basis. Based on the same, on 1 July 2000, the first Sealdah Rajdhani Express left for New Delhi from Sealdah for its maiden journey.

On 23 August 2006, the coaches of Sealdah Rajdhani Express were upgraded to LHB coaches replacing the older ICF coaches.

Route and halts

 * Sealdah
 * Durgapur
 * Asansol Junction
 * Dhanbad Junction
 * Gaya Junction
 * Pt. Deen Dayal Upadhyaya Junction
 * Kanpur Central
 * New Delhi

Traction
It is hauled by a Howrah based WAP-7 (HOG) equipped locomotive from end to end. Post the transfer of HOG based WAP-7s and other electric locomotives to the Kanchrapara Locomotive Shed, officially known as the Sealdah Locomotive Shed, the Sealdah Rajdhani was occasionally spotted with the SDAH based WAP-7 (HOG) locomotive.

Speed
The train can reach its maximum allowed speed of 130 km/h, except for two specific sections. One is the 29 km stretch between New Delhi (NDLS) and Chipyana Buzurg (CPYZ), where the Railway is endeavoring to increase the maximum allowed speed from 110 km/h to 130 km/h. The other section is Gurpa to Gujhandi near Koderma, comprising a 22 km long ghat portion where trains are permitted to travel at a maximum speed of 80 km/h. Within tunnels, the speed limit is further reduced to 65 km/h. Additionally, trains briefly touch speeds of 100 km/h over a short distance of approximately 3 km. In 2019, the Cabinet Committee on Economic Affairs (CCEA) recommended to the government the augmentation of the existing maximum permissible speed of the Delhi – Howrah route from 130 kmph to 160 kmph, with the aim of enhancing average speed by a minimum of 60% to facilitate quicker connectivity and trade. In alignment with this directive, the Railway Board approved a project budgeted at Rs. 6,865 crore under the Indian Railway’s Mission Raftaar initiative. The project's objective is to elevate the maximum permissible speed of both the Delhi – Howrah and Kanpur – Lucknow routes to 160 kmph by the timeline of 2022-2023. However, there has been no specific update on the progress of the project to date.