🛣️Secondary Highway

National Highway 648 (NH 648)

Nelamangla to Hosur — 143.0 km

NH 648 is a secondary/branch national highway connecting Nelamangla to Hosur, spanning 143.0 km through Karnataka, Tamil Nadu. It branches from NH 48.

143.0

Kilometres

States

Major Cities

NH 48

Parent Highway

NH 648 Route Map

(NH207) NH48 near Nelamangla, Dodaballapur, Devenhalli (NH44), Sarajpur, Bagalur, NH48 near Hosur

States & Union Territories

NH 648 passes through the following 2 states:

KarnatakaTamil Nadu

Major Cities & Towns Along NH 648

The highway passes through 6 major cities and towns:

●Nelamangla→●Dodaballapur→●Devenhalli→●Sarajpur→●Bagalur→●Hosur

View on Google Maps

NH 648 Start and End Point

Start Point (Origin)

Nelamangla

Junction point from route description

End Point (Terminus)

Hosur

Junction point from route description

Highway Classification

Highway NumberNH 648

TypeSecondary/Branch Highway

Parent HighwayNH 48

Total Length143.0 km

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 648

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 648

⚠️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 648 pass through?

National Highway 648 passes through Karnataka, Tamil Nadu.

What are the major cities on National Highway 648?

The major cities and towns along National Highway 648 include Nelamangla, Dodaballapur, Devenhalli, Sarajpur, Bagalur, Hosur.

What is the total length of National Highway 648?

The total length of National Highway 648 is 143.0 km.

Is National Highway 648 a primary or secondary national highway?

National Highway 648 is a secondary/branch national highway that branches from NH 48.

What is the speed limit on National Highway 648?

The speed limit on National Highway 648 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 648? (Route Map)

National Highway 648 follows this route: (NH207) NH48 near Nelamangla, Dodaballapur, Devenhalli (NH44), Sarajpur, Bagalur, NH48 near Hosur.

Planning a Road Trip on NH 648?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist