🛣️South IndiaPrimary Highway

National Highway 42 (NH 42)

Joladarasi to Krishnagiri — 361.0 km

NH 42 is a primary national highway connecting Joladarasi to Krishnagiri, spanning 361.0 km through Andhra Pradesh, Karnataka, Tamil Nadu.

361.0

Kilometres

States

Major Cities

NH 42

Parent Highway

NH 42 Route Map

(NH67) Near Ballari(Karnataka), Anantapur(NH44), Kadiri, (NH219) Madanapalli, Kuppam, NH44 near Krishnagiri

States & Union Territories

NH 42 passes through the following 3 states:

Andhra PradeshKarnatakaTamil Nadu

Major Cities & Towns Along NH 42

The highway passes through 6 major cities and towns:

●Near Ballari(Karnataka)→●Anantapur→●Kadiri→●Madanapalli→●Kuppam→●Krishnagiri

View on Google Maps

NH 42 Start and End Point

Start Point (Origin)

Joladarasi

End Point (Terminus)

Krishnagiri

Highway Classification

Highway NumberNH 42

TypePrimary National Highway

Total Length361.0 km

RegionSouth India

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 42

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 42

⚠️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 42 start and end?

National Highway 42 starts from Joladarasi and ends at Krishnagiri, covering a total distance of 361.0 km.

Which states does National Highway 42 pass through?

National Highway 42 passes through Andhra Pradesh, Karnataka, Tamil Nadu.

What are the major cities on National Highway 42?

The major cities and towns along National Highway 42 include Near Ballari(Karnataka), Anantapur, Kadiri, Madanapalli, Kuppam, Krishnagiri.

What is the total length of National Highway 42?

The total length of National Highway 42 is 361.0 km.

Is National Highway 42 a primary or secondary national highway?

National Highway 42 is a primary national highway in India's post-2010 numbering system.

What is the speed limit on National Highway 42?

The speed limit on National Highway 42 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 42? (Route Map)

National Highway 42 follows this route: (NH67) Near Ballari(Karnataka), Anantapur(NH44), Kadiri, (NH219) Madanapalli, Kuppam, NH44 near Krishnagiri — starting at Joladarasi and ending at Krishnagiri.

Planning a Road Trip on NH 42?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist