🛣️Secondary Highway

National Highway 380A (NH 380A)

Sirkali to Thiruthuraipoondi — 90.0 km

NH 380A is a secondary/branch national highway connecting Sirkali to Thiruthuraipoondi, spanning 90.0 km through Tamil Nadu. It branches from NH 80.

90.0

Kilometres

State

Major Cities

NH 80

Parent Highway

NH 380A Route Map

NH362 near Sirkali, Mayiladuthurai, Thiruvarr, Thiruthuraipoondi

States & Union Territories

NH 380A passes through the following 1 state:

Tamil Nadu

Major Cities & Towns Along NH 380A

The highway passes through 4 major cities and towns:

●Sirkali→●Mayiladuthurai→●Thiruvarr→●Thiruthuraipoondi

View on Google Maps

NH 380A Start and End Point

Start Point (Origin)

Sirkali

Junction point from route description

End Point (Terminus)

Thiruthuraipoondi

Junction point from route description

Highway Classification

Highway NumberNH 380A

TypeSecondary/Branch Highway

Parent HighwayNH 80

Total Length90.0 km

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 380A

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 380A

⚠️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 380A pass through?

National Highway 380A passes through Tamil Nadu.

What are the major cities on National Highway 380A?

The major cities and towns along National Highway 380A include Sirkali, Mayiladuthurai, Thiruvarr, Thiruthuraipoondi.

What is the total length of National Highway 380A?

The total length of National Highway 380A is 90.0 km.

Is National Highway 380A a primary or secondary national highway?

National Highway 380A is a secondary/branch national highway that branches from NH 80.

What is the speed limit on National Highway 380A?

The speed limit on National Highway 380A 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 380A? (Route Map)

National Highway 380A follows this route: NH362 near Sirkali, Mayiladuthurai, Thiruvarr, Thiruthuraipoondi.

Planning a Road Trip on NH 380A?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist