National Highway 381B (NH 381B)
Written and checked byRamanathan Virli· Roads & Infrastructure
Musiri to Mettupalayam — 216.0 km
NH 381B is a secondary/branch national highway connecting Musiri to Mettupalayam, spanning 216.0 km through Tamil Nadu. It branches from NH 81.
216.0
Kilometres
1
State
10
Major Cities
NH 81
Parent Highway
NH 381B Route Map
NH81 near Musiri, Thottiyam, Ezlurpatty, Meikalnaikanpatty, NH44 near Namakkal, Tiruchengode, Erode, Athani, Sathyamangalam, Mettupalayam,
States & Union Territories
NH 381B passes through the following 1 state:
Major Cities & Towns Along NH 381B
The highway passes through 10 major cities and towns:
NH 381B Start and End Point
Start Point (Origin)
Musiri
End Point (Terminus)
Mettupalayam
Highway Classification
Speed Limit on NH 381B
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 381B
- ⚠️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 381B start and end?
Which states does National Highway 381B pass through?
What are the major cities on National Highway 381B?
What is the total length of National Highway 381B?
Is National Highway 381B a primary or secondary national highway?
What is the speed limit on National Highway 381B?
What is the route of National Highway 381B? (Route Map)
Planning a Road Trip on NH 381B?
Check out our road safety guides and highway speed limits.
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