National Highway 179B (NH 179B)
Written and checked byRamanathan Virli· Roads & Infrastructure
Tindivadnam to Chennai — 116.0 km
NH 179B is a secondary/branch national highway connecting Tindivadnam to Chennai, spanning 116.0 km through Tamil Nadu. It branches from NH 79.
116.0
Kilometres
1
State
5
Major Cities
NH 79
Parent Highway
NH 179B Route Map
NH77 near Tindivadnam, Melmaruvuthur, Chengalpattu, NH48 near Poonamallee, Chennai
States & Union Territories
NH 179B passes through the following 1 state:
Major Cities & Towns Along NH 179B
The highway passes through 5 major cities and towns:
NH 179B Start and End Point
Start Point (Origin)
Tindivadnam
End Point (Terminus)
Chennai
Highway Classification
Speed Limit on NH 179B
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 179B
- ⚠️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 179B start and end?
Which states does National Highway 179B pass through?
What are the major cities on National Highway 179B?
What is the total length of National Highway 179B?
Is National Highway 179B a primary or secondary national highway?
What is the speed limit on National Highway 179B?
What is the route of National Highway 179B? (Route Map)
Planning a Road Trip on NH 179B?
Check out our road safety guides and highway speed limits.
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