🛣️Secondary Highway

National Highway 503A (NH 503A)

Amritsar to Una — 142.4 km

NH 503A is a secondary/branch national highway connecting Amritsar to Una, spanning 142.4 km through Himachal Pradesh, Punjab. It branches from NH 3.

142.4

Kilometres

States

Major Cities

NH 3

Parent Highway

NH 503A Route Map

NH3 near Amritsar, Mehta, Sri Hargobindpur, Tanda, Hoshiarpur, NH503 near Una

States & Union Territories

NH 503A passes through the following 2 states:

Himachal PradeshPunjab

Major Cities & Towns Along NH 503A

The highway passes through 6 major cities and towns:

●Amritsar→●Mehta→●Sri Hargobindpur→●Tanda→●Hoshiarpur→●Una

View on Google Maps

NH 503A Start and End Point

Start Point (Origin)

Amritsar

Junction point from route description

End Point (Terminus)

Una

Junction point from route description

Highway Classification

Highway NumberNH 503A

TypeSecondary/Branch Highway

Parent HighwayNH 3

Total Length142.4 km

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 503A

Cars, Jeeps & Light Motor Vehicles100 km/h

Buses & Goods Carriers (medium)80 km/h

Heavy Motor Vehicles (trucks, lorries)60 km/h

Motorcycles & Two-Wheelers80 km/h

Speed limits are prescribed under the Motor Vehicles Act and Central Motor Vehicles Rules for national highways. State governments may impose lower limits on specific stretches.

Safety Tips for Driving on NH 503A

⚠️Always follow the speed limit — 100 km/h for cars and 80 km/h for heavy vehicles on national highways.
⚠️Wear seatbelts and ensure all passengers are buckled up.
⚠️Do not overtake on curves, bridges, or narrow sections.
⚠️Keep a safe following distance, especially during monsoon season.
⚠️Use headlights even during daytime on highways.
⚠️Take breaks every 2 hours during long drives to avoid fatigue.
⚠️In case of an emergency, call 112 (Unified Emergency Number) or 1033 (National Highway Helpline).

Frequently Asked Questions

Which states does National Highway 503A pass through?

National Highway 503A passes through Himachal Pradesh, Punjab.

What are the major cities on National Highway 503A?

The major cities and towns along National Highway 503A include Amritsar, Mehta, Sri Hargobindpur, Tanda, Hoshiarpur, Una.

What is the total length of National Highway 503A?

The total length of National Highway 503A is 142.4 km.

Is National Highway 503A a primary or secondary national highway?

National Highway 503A is a secondary/branch national highway that branches from NH 3.

What is the speed limit on National Highway 503A?

The speed limit on National Highway 503A is 100 km/h for cars and light motor vehicles, 80 km/h for buses and medium goods vehicles, and 60 km/h for heavy motor vehicles (trucks and lorries). These limits are set under the Central Motor Vehicles Rules for national highways. State governments may impose lower limits on specific sections.

What is the route of National Highway 503A? (Route Map)

National Highway 503A follows this route: NH3 near Amritsar, Mehta, Sri Hargobindpur, Tanda, Hoshiarpur, NH503 near Una.

Planning a Road Trip on NH 503A?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist