🛣️South IndiaPrimary Highway

National Highway 77 (NH 77)

Krishnagiri to Tindivanam — 225.0 km

NH 77 is a primary national highway connecting Krishnagiri to Tindivanam, spanning 225.0 km through Tamil Nadu.

225.0

Kilometres

State

Major Cities

NH 77

Parent Highway

NH 77 Route Map

NH48 near Krishnagiri, Uthangarai, Harur, Tiruvannamalai, Gingee, NH32 near Tindivanam, Puducherry

States & Union Territories

NH 77 passes through the following 1 state:

Tamil Nadu

Major Cities & Towns Along NH 77

The highway passes through 6 major cities and towns:

●Krishnagiri→●Uthangarai→●Harur→●Tiruvannamalai→●Gingee→●Tindivanam

View on Google Maps

NH 77 Start and End Point

Start Point (Origin)

Krishnagiri

End Point (Terminus)

Tindivanam

Highway Classification

Highway NumberNH 77

TypePrimary National Highway

Total Length225.0 km

RegionSouth India

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 77

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 77

⚠️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 77 start and end?

National Highway 77 starts from Krishnagiri and ends at Tindivanam, covering a total distance of 225.0 km.

Which states does National Highway 77 pass through?

National Highway 77 passes through Tamil Nadu.

What are the major cities on National Highway 77?

The major cities and towns along National Highway 77 include Krishnagiri, Uthangarai, Harur, Tiruvannamalai, Gingee, Tindivanam.

What is the total length of National Highway 77?

The total length of National Highway 77 is 225.0 km.

Is National Highway 77 a primary or secondary national highway?

National Highway 77 is a primary national highway in India's post-2010 numbering system.

What is the speed limit on National Highway 77?

The speed limit on National Highway 77 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 77? (Route Map)

National Highway 77 follows this route: NH48 near Krishnagiri, Uthangarai, Harur, Tiruvannamalai, Gingee, NH32 near Tindivanam, Puducherry — starting at Krishnagiri and ending at Tindivanam.

Planning a Road Trip on NH 77?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist