[1] It is the first train after Bhopal Express to be certified for quality at the ISO 9000 level.

It connects the major cities of Bihar and Uttar Pradesh like Saharsa, Barauni, Samastipur, Muzaffarpur, Hajipur,Siwan, Deoria, Chhapra, Gorakhpur, Lucknow and Kanpur with the national capital New Delhi.

The aged ICF coach of the train were replaced with LHB coach during first week of May 2018, increasing its speed limit to 130 kilometres per hour (81 mph).

This train is hauled by CNB (Kanpur)-based WAP-7 from end-to-end.

On November 16, 2023, a Vaishali Express train caught fire in Etawah, Uttar Pradesh, India.