National Highway 310A (NH 310A)
Written and checked byRamanathan Virli· Roads & Infrastructure
NH310 to Kataola — 144.6 km
NH 310A is a secondary/branch national highway connecting NH310 to Kataola, spanning 144.6 km through Sikkim. It branches from NH 10.
144.6
Kilometres
1
State
5
Major Cities
NH 10
Parent Highway
NH 310A Route Map
NH310 at Tashiview point, Phodang, Mangan, Lachung, Kataola
States & Union Territories
NH 310A passes through the following 1 state:
Major Cities & Towns Along NH 310A
The highway passes through 5 major cities and towns:
NH 310A Start and End Point
Start Point (Origin)
NH310
End Point (Terminus)
Kataola
Highway Classification
Speed Limit on NH 310A
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 310A
- ⚠️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 310A start and end?
Which states does National Highway 310A pass through?
What are the major cities on National Highway 310A?
What is the total length of National Highway 310A?
Is National Highway 310A a primary or secondary national highway?
What is the speed limit on National Highway 310A?
What is the route of National Highway 310A? (Route Map)
Planning a Road Trip on NH 310A?
Check out our road safety guides and highway speed limits.
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