How NHAI classifies vehicles for toll pricing: from cars and SUVs to multi-axle trucks. Learn which category your vehicle falls into and how it affects your toll costs.
TollRoute Team
Published February 14, 2026
The National Highways Authority of India categorises vehicles into six primary classes for toll fee determination. Vehicle Class 1 includes cars, jeeps, vans, and SUVs with a gross vehicle weight (GVW) of up to 3.5 tonnes. This is the most common category and the base multiplier of 1.0 applies. Class 2 covers Light Commercial Vehicles (LCVs) with a GVW of 3.51 to 7.5 tonnes, charged at 2.0x the base rate.
Class 3 comprises two-axle trucks and buses with a GVW above 7.5 tonnes, charged at 2.5x. Class 4 covers three-axle commercial vehicles at 3.0x. Class 5 includes multi-axle vehicles (4 or more axles) at 4.5x. Class 6 is reserved for Heavy Construction Machinery (HCM) and Earth Moving Equipment (EME) at 5.0x. Correct classification is essential, as misclassification can result in penalties or overpayment.
The number of axles is directly proportional to the toll multiplier because road wear increases significantly with axle load. A single axle on a fully loaded truck can exert up to 10 tonnes of force on the road surface, compared to just 0.5 tonnes per axle for a typical car. This is why a three-axle truck (3.0x) pays exactly three times what a car pays at the same toll plaza.
TollRoute's intelligent vehicle classifier automatically determines the correct vehicle class based on inputs like vehicle type, number of axles, and GVW. Simply enter your vehicle's registration number or select your vehicle model from our database, and we instantly apply the correct toll multiplier. This ensures accurate cost estimates and helps you budget precisely for every journey on Indian highways.
Since February 15, 2021, FASTag has been mandatory for all vehicles on national highways, following the Supreme Court's directive. Vehicles without FASTag are charged double the applicable toll fee at plazas where FASTag lanes exceed 50% of total lanes. This policy has achieved over 95% compliance on most national highways, significantly reducing queue times at toll plazas across India.
Providing incorrect vehicle classification during FASTag issuance can result in penalties. If a vehicle is classified in a lower category than it belongs to (e.g., registering a 2-axle truck as an LCV), NHAI can levy a penalty of up to 3x the difference in toll fees. TollRoute helps prevent this by cross-referencing your vehicle's specifications against the official NHAI classification database.
Electric vehicles (EVs) currently enjoy the same classification as their ICE counterparts but several states are considering toll discounts to promote EV adoption. Gujarat has proposed a 10% toll discount for EVs on state highways, though NHAI has not yet implemented a national policy. Agricultural vehicles, tractors, and three-wheelers are classified separately and typically charged at 50-75% of the standard LCV rate.
Buses, regardless of passenger capacity, fall under Class 3 (2-axle commercial) unless they have three axles (e.g., luxury sleeper buses), in which case they are Class 4. School buses and ambulances are exempt from toll fees on most national highways, though they must carry proper documentation. TollRoute's database includes these edge cases to ensure accurate estimates for all vehicle types.
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