Route
NH 503A runs 214 km from Golden Avenue, Punjab to Bhotta, Himachal Pradesh.
Crosses Punjab and Himachal Pradesh.
Through Golden Avenue, Amritsar, Mehta Chowk, Urmar Tanda, Hoshiarpur, Una, Bangana, Barsar and Bhotta.
Why it matters
NH 503A is a branch of NH 503. In the national highway numbering used since 2010, a letter after the number marks a spur or link off the main route — this one runs Golden Avenue to Bhotta, and it meets NH 503 along the way.