National Highway 315A (NH 315A)
Written and checked byRamanathan Virli· Roads & Infrastructure
Khonsa to Tinsukia — 158.0 km
NH 315A is a secondary/branch national highway connecting Khonsa to Tinsukia, spanning 158.0 km through Arunachal Pradesh, Assam. It branches from NH 15.
158.0
Kilometres
2
States
4
Major Cities
NH 15
Parent Highway
NH 315A Route Map
NH215 near Khonsa, Hukanjuri, Nahorkatia, NH15 near Tinsukia
States & Union Territories
NH 315A passes through the following 2 states:
Major Cities & Towns Along NH 315A
The highway passes through 4 major cities and towns:
NH 315A Start and End Point
Start Point (Origin)
Khonsa
End Point (Terminus)
Tinsukia
Highway Classification
Speed Limit on NH 315A
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 315A
- ⚠️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
Where does National Highway 315A start and end?
Which states does National Highway 315A pass through?
What are the major cities on National Highway 315A?
What is the total length of National Highway 315A?
Is National Highway 315A a primary or secondary national highway?
What is the speed limit on National Highway 315A?
What is the route of National Highway 315A? (Route Map)
Planning a Road Trip on NH 315A?
Check out our road safety guides and highway speed limits.
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