🛣️Secondary Highway

National Highway 172A (NH 172A)

Hiriyur to Penukonda — 133.0 km

NH 172A is a secondary/branch national highway connecting Hiriyur to Penukonda, spanning 133.0 km through Andhra Pradesh, Karnataka. It branches from NH 72.

133.0

Kilometres

States

Major Cities

NH 72

Parent Highway

NH 172A Route Map

NH72-NH48 near Hiriyur, Amarapuram, Madakasira, NH44 near Penukonda

States & Union Territories

NH 172A passes through the following 2 states:

Andhra PradeshKarnataka

Major Cities & Towns Along NH 172A

The highway passes through 4 major cities and towns:

●-Hiriyur→●Amarapuram→●Madakasira→●Penukonda

View on Google Maps

NH 172A Start and End Point

Start Point (Origin)

Hiriyur

Junction point from route description

End Point (Terminus)

Penukonda

Junction point from route description

Highway Classification

Highway NumberNH 172A

TypeSecondary/Branch Highway

Parent HighwayNH 72

Total Length133.0 km

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 172A

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 172A

⚠️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 172A pass through?

National Highway 172A passes through Andhra Pradesh, Karnataka.

What are the major cities on National Highway 172A?

The major cities and towns along National Highway 172A include -Hiriyur, Amarapuram, Madakasira, Penukonda.

What is the total length of National Highway 172A?

The total length of National Highway 172A is 133.0 km.

Is National Highway 172A a primary or secondary national highway?

National Highway 172A is a secondary/branch national highway that branches from NH 72.

What is the speed limit on National Highway 172A?

The speed limit on National Highway 172A 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 172A? (Route Map)

National Highway 172A follows this route: NH72-NH48 near Hiriyur, Amarapuram, Madakasira, NH44 near Penukonda.

Planning a Road Trip on NH 172A?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist