For instance, line 5- Mundka to Inderlok-was extended to Kirti Nagar as a vital connection to the Blue line (Dwarka Sector 21 to Noida/Vaishali). The ridership has gone up on this line since. Line 6 – Central Secretariat to Badarpur – has been extended on both sides. From Central Secretariat, the line now goes till ITO while on the Badarpur side, it extends to Faridabad. The only corridor that hasn’t been extended recently is line 1 (Dilshad Garden to Rithala), which will be worked on in the next phase.
Yet, all three corridors ply four and six coach trains only. And while frequency has been increased, says Delhi Metro Rail Corporation, the fact is that most trains on these corridors are mostly four-coach ones. In fact, line 5 has only one six-coach train, while the other 17 are four-coach trains. Line 6 has a 50-50 mix of four and six-coach trains while line 1 has only 10 six-coach trains, and around double that amount, 19 four-coach trains.
Only the Yellow (Jahangirpuri to HUDA City Centre) and Blue lines have eight-coach trains at present. While the former has 33 eight-coach trains, Blue line has 25 such trains between Noida and Vaishali. According to Delhi Metro officials, the number of trains on each corridor has been decided based on ridership and capacity.
Commuters, however, have been complaining of greater crowds than usual on these corridors lately. In fact, most complaints are about non-peak crowd, with many complaints being lodged about not finding seats even at originating stations. Ridership on these lines has also gone up in the past year. While line 1 has consistently seen ridership of over four lakhs daily, line 5 has an average of one lakh riders and line 6 has over 2 lakh. What makes line 5 and 6 crucial, however, are their connectivity to the Blue and Yellow line, making certain parts of the corridor more crowded than others.
Chief minister Arvind Kejriwal had also recently asked Delhi Metro to run trains at a greater frequency even during off-peak hours.