🛣️Secondary Highway

National Highway 180 (NH 180)

Sayalgudi to Watrap — 119.0 km

NH 180 is a secondary/branch national highway connecting Sayalgudi to Watrap, spanning 119.0 km through Tamil Nadu. It branches from NH 80.

119.0

Kilometres

State

Major Cities

NH 80

Parent Highway

NH 180 Route Map

NH80 near Sayalgudi, Aruppukkottai, Virudhunagar, Alagapuri, Watrap

States & Union Territories

NH 180 passes through the following 1 state:

Tamil Nadu

Major Cities & Towns Along NH 180

The highway passes through 5 major cities and towns:

●Sayalgudi→●Aruppukkottai→●Virudhunagar→●Alagapuri→●Watrap

View on Google Maps

NH 180 Start and End Point

Start Point (Origin)

Sayalgudi

Junction point from route description

End Point (Terminus)

Watrap

Junction point from route description

Highway Classification

Highway NumberNH 180

TypeSecondary/Branch Highway

Parent HighwayNH 80

Total Length119.0 km

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 180

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 180

⚠️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 180 pass through?

National Highway 180 passes through Tamil Nadu.

What are the major cities on National Highway 180?

The major cities and towns along National Highway 180 include Sayalgudi, Aruppukkottai, Virudhunagar, Alagapuri, Watrap.

What is the total length of National Highway 180?

The total length of National Highway 180 is 119.0 km.

Is National Highway 180 a primary or secondary national highway?

National Highway 180 is a secondary/branch national highway that branches from NH 80.

What is the speed limit on National Highway 180?

The speed limit on National Highway 180 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 180? (Route Map)

National Highway 180 follows this route: NH80 near Sayalgudi, Aruppukkottai, Virudhunagar, Alagapuri, Watrap.

Planning a Road Trip on NH 180?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist