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🛣️Secondary Highway

National Highway 338 (NH 338)

Melur to Karaikkudi — 56.5 km

NH 338 is a secondary/branch national highway connecting Melur to Karaikkudi, spanning 56.5 km through Tamil Nadu. It branches from NH 38.

56.5

Kilometres

1

State

2

Major Cities

NH 38

Parent Highway

NH 338 Route Map

NH38 near Melur, NH536 near Karaikkudi

States & Union Territories

NH 338 passes through the following 1 state:

Tamil Nadu

Major Cities & Towns Along NH 338

The highway passes through 2 major cities and towns:

●Melur→●Karaikkudi
View on Google Maps

NH 338 Start and End Point

Start Point (Origin)

Melur

Junction point from route description

End Point (Terminus)

Karaikkudi

Junction point from route description

Highway Classification

Highway NumberNH 338
TypeSecondary/Branch Highway
Parent HighwayNH 38
Total Length56.5 km
Numbering SystemPost-2010 (New)
Managed ByNHAI / MoRTH

Speed Limit on NH 338

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 338

  • ⚠️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 338 pass through?
National Highway 338 passes through Tamil Nadu.
What are the major cities on National Highway 338?
The major cities and towns along National Highway 338 include Melur, Karaikkudi.
What is the total length of National Highway 338?
The total length of National Highway 338 is 56.5 km.
Is National Highway 338 a primary or secondary national highway?
National Highway 338 is a secondary/branch national highway that branches from NH 38.
What is the speed limit on National Highway 338?
The speed limit on National Highway 338 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 338? (Route Map)
National Highway 338 follows this route: NH38 near Melur, NH536 near Karaikkudi.

Planning a Road Trip on NH 338?

Check out our road safety guides and highway speed limits.

Road Safety RulesHighway Speed LimitsRoad Trip Checklist

Related National Highways

NH 38

Vellore → Thoothukudi

640.0 km
South India

NH 138

51.6 km

NH 538

105.0 km

Other National Highways in Tamil Nadu

NH 16

Chennai → Kolkata

NH 32

Chennai → Thoothukudi

NH 36

Vikravandi → Manamadurai

NH 38

Vellore → Thoothukudi

NH 42

Joladarasi → Krishnagiri

NH 44

Srinagar → Kanyakumari

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