Did you know that an AC train was started in India on September 1, 1928 named - Punjab Mail and AC coaches were added to this train in 1934 and was named Frontier Mail.

At that time trains were distributed in first and second class, only British were allowed to travel in first class. This is why AC was converted to bogie to keep it cool. The British had built this system for their convenience, using ice stitches instead of AC, which were kept under the floor.

The train started on September 1, 1928 from Ballard Pier Station in Mumbai to Peshawar (now in Pakistan) via Delhi, Bathinda, Ferozpur and Lahore, but in March 1930 it was turned towards Saharanpur, Ambala, Amritsar and Lahore. It didn't work to keep the bogie cool earlier using snow stitches, but then added AC system. The name of this train was Frontier Mail, which was later operated as Golden Temple Mail in 1996.

Frontier Mail was called one of the most luxury trains of the British period. Earlier it used to run 60 km of steam, but now it is run electric. According to the Times of India, the train travels 1,893 km, stops at 35 railway stations and carries around 1,300 passengers in its 24 cans. This telegram used to run for carrying and carrying. This train has been nearly 95 years.