National Highways in India: The Complete 2026 Guide to NHAI Projects, Expressways, Tolls and Road Safety

India's road network is going through one of the biggest transformations in its history. Over the past decade, the National Highways Authority of India (NHAI) has quietly rewritten the country's transport map — cutting journey times, replacing decades-old two-lane roads with modern expressways, and moving toll collection from cash booths to satellite-based systems.

For anyone tracking Indian infrastructure — whether you're an investor, a logistics planner, an expat business owner, or simply someone who enjoys following how countries build for the future — 2026 is a pivotal year. Several flagship projects are reaching completion, toll rules have changed again, and road safety enforcement is tightening.

This guide breaks down everything you need to know: what NHAI actually does, which expressways matter most right now, how the toll system works today, what's changing around road safety, and where state highways fit into the bigger picture.

Why India's National Highways Matter More Than Ever

India's National Highways make up less than 2% of the country's total road length, yet they carry over 40% of all road traffic. That imbalance tells you everything about why highway investment has become a national priority.

A few reasons this matters beyond India's borders:

  • Trade and logistics — Faster highways mean cheaper freight, which affects the cost of goods moving to ports for export.
  • Foreign investment — Manufacturing and logistics hubs are increasingly chosen based on highway connectivity to ports and airports.
  • Tourism — Better roads open up previously hard-to-reach regions to both domestic and international travellers.
  • Road safety — India has one of the highest road fatality rates in the world, so highway design directly affects public health outcomes.

If you're new to this topic, it's worth starting with the basics of how India's highway numbering system works, which is a good companion topic for a future deep-dive on this site.

Understanding NHAI: The Body Behind India's Highway Revolution

The National Highways Authority of India was set up in 1988 under an Act of Parliament, but it didn't really hit its stride until the early 2000s. Today, it functions under the Ministry of Road Transport and Highways (MoRTH) and is responsible for:

  • Planning, building, and maintaining National Highways
  • Awarding construction contracts through EPC, HAM, and BOT models
  • Managing electronic toll collection across the network
  • Overseeing the Bharatmala Pariyojana — the umbrella programme behind most large-scale highway expansion since 2017

NHAI doesn't build every stretch of road itself. Instead, it typically works through three contracting models:

  1. EPC (Engineering, Procurement, Construction) — the government pays for construction upfront; used for strategically important or commercially less viable stretches.
  2. HAM (Hybrid Annuity Model) — cost is split between government funding and private investment, with the developer recovering costs over time.
  3. BOT (Build-Operate-Transfer) — a private company builds and operates the road, recovering costs through tolls before handing it back to NHAI.

Understanding which model applies to a stretch of road often explains why some highways have tolls and others don't, and why maintenance quality can vary between sections.

The Expressway Boom: Key Corridors Reshaping Travel

Expressways are different from ordinary National Highways — they're access-controlled, typically eight lanes wide (expandable to twelve), and designed for speeds of 100–120 km/h with no at-grade crossings. Several major corridors are worth watching closely in 2026.

Delhi–Mumbai Expressway

This is the flagship project of the entire Bharatmala programme — a 1,350+ km, eight-lane greenfield corridor connecting the national capital to the financial capital via Haryana, Rajasthan, Madhya Pradesh, Gujarat, and Maharashtra. The government has taken up implementation of the expressway across 54 construction packages covering a total length of 1,445 km, with 929 km already operational. The Delhi–Vadodara section specifically was targeted for completion by June 2026, though progress on three packages in Gujarat's Vadodara–Mumbai section has been delayed, with those sections now expected only by March 2028. SwarajyaSwarajya

Once fully open, the corridor is expected to cut Delhi–Mumbai driving time from around 24 hours to roughly 12, thanks to a 120 km/h design speed and a fully access-controlled alignment. It's also notable for introducing Multi-Lane Free Flow (MLFF) barrier-free tolling on its newest sections — vehicles are scanned by overhead gantries as they pass, with tolls deducted automatically from linked FASTag accounts, with no need to slow down at a physical booth.

Bangalore–Chennai Expressway

Designed to cut travel time between two of South India's biggest economic hubs, this corridor is a strong candidate for a dedicated future article on this blog — something we'd flag as "Bangalore-Chennai Expressway: route, cities covered, and completion timeline".

Delhi–Dehradun Expressway

This corridor has become something of a proving ground for barrier-free tolling technology in India, and it's frequently referenced alongside the Delhi-Mumbai corridor for its MLFF rollout. It deserves its own explainer — a good future topic would be "Delhi-Dehradun Expressway: what barrier-free tolling means for commuters".

Why Expressway Completion Dates Keep Shifting

If you've followed Indian infrastructure news for a while, you'll notice completion dates for major expressways move fairly often. This usually comes down to a handful of recurring issues:

  • Land acquisition disputes in specific packages
  • Contractor-side delays on individual sections
  • Environmental clearances, especially near forest or wildlife corridors
  • Bridge and tunnel engineering challenges in hilly terrain

It's a useful reality check for anyone budgeting a business plan or travel itinerary around a highway's "official" opening date — building in a buffer is generally sensible.

How the Toll System Works in 2026

Toll collection in India has changed dramatically over the past five years, and 2026 has brought some of the most significant shifts yet.

FASTag Remains Mandatory

FASTag — the RFID-based electronic tag stuck to a vehicle's windscreen — has been mandatory for Class M and N vehicles on National Highways since February 2021. India now collects over 95% of all national highway toll transactions electronically via FASTag, with penetration running at 97–98%. Driving without an active, valid tag means paying double the standard toll rate at every plaza.

GNSS Satellite Tolling Is Rolling Out

The bigger shift is the move toward GNSS (Global Navigation Satellite System) tolling, which charges vehicles based on the exact distance travelled rather than a flat plaza fee. NHAI plans to implement GNSS-based electronic toll collection within the existing FASTag ecosystem, initially running a hybrid model where both RFID-based and GNSS-based collection operate side by side. The rollout is progressing with commercial vehicles that already carry Vehicle Location Tracking devices, with private vehicle integration expected to follow through 2026–27. Press Information Bureau

The "Zero-Cash" Policy

A "Zero-Cash" policy took effect from April 2026, phasing out cash lanes at National Highway plazas. UPI payments at toll lanes now attract a 1.25x surcharge instead of the earlier 2x cash penalty, nudging non-FASTag digital users toward adopting the tag properly.

What's Changed With the Annual Pass

The FASTag Annual Pass for FY 2026–27 has been revised to ₹3,075, up from ₹3,000, covering 200 toll plaza crossings or one year — whichever comes first. It's available to non-commercial vehicles with a valid FASTag and is accepted at over 1,000 fee plazas nationwide, making it a genuinely useful option for anyone doing regular long-distance driving. RajmargyatraRajmargyatra

Know Your Rights at a Toll Plaza

A detail many drivers still don't know: if the vehicle queue at a toll plaza exceeds 100 metres, NHAI rules allow vehicles to pass without paying the toll. This is a legal entitlement, not a favour from plaza operators, and it's worth keeping in mind on busy travel days. Rajmargyatra

Digital Enforcement Is Tightening

The Government of India notified the National Highways Fee (Second Amendment) Rules, 2026, effective 17 March 2026, introducing a structured recovery mechanism for unpaid toll fees — tolls recorded electronically but not settled at the time of travel. The framework integrates the National Electronic Toll Collection system with the VAHAN vehicle database, and registered owners now receive e-notices by SMS, email, or app specifying vehicle details, location, and amount payable. Policyedge + 2

For a practical breakdown of what these changes mean day-to-day, a strong future post on this site would be "FASTag vs GNSS tolling: which one applies to your vehicle in 2026?"

Road Safety on Indian Highways

Expressway growth has brought real safety improvements — but National Highways as a whole still face serious challenges. A few structural issues stand out:

  • Mixed traffic — Tractors, two-wheelers, pedestrians, and animals often share the same carriageway as fast-moving trucks and cars on older highway stretches.
  • Poor lighting and signage — Particularly on state-maintained connector roads feeding into National Highways.
  • Driver fatigue on long-haul routes — A known factor in freight-related accidents, especially on corridors like the Grand Trunk Road.
  • Inconsistent enforcement — Speed limits and lane discipline vary significantly by state.

Newer expressways are built with safety baked in from the start — access control, dedicated wildlife underpasses in sensitive corridors, and intelligent traffic management systems. But the transition period, where old and new infrastructure coexist, is often where the greatest risk lies.

A useful future companion piece here would be "Highway driving safety checklist: what changes on India's newest expressways" — something we'd recommend adding to the site's content calendar.

State Highway Developments

While NHAI projects dominate headlines, state highways carry an enormous share of everyday traffic and often connect rural areas to the national network. Several patterns are worth watching in 2026:

  • State road development corporations (like BSRDC in Bihar or similar bodies elsewhere) are increasingly co-financing upgrades alongside NHAI, particularly where a state highway feeds directly into a national corridor.
  • WPI-indexed toll revisions now apply consistently across most state-maintained toll roads that connect to national plazas, meaning rate increases tend to happen in step with national revisions each April.
  • Bharatmala-linked state corridors — several state highways are being absorbed into national highway numbering as they're upgraded, which can cause some short-term confusion in navigation apps and signage.

If you're researching a specific state's highway network, it's worth checking whether a stretch is under NHAI, a state PWD, or a private concessionaire, since maintenance responsibility — and who to contact about a pothole or a toll dispute — depends entirely on that answer.

What This Means for UK Businesses and Investors

For UK-based logistics firms, infrastructure investors, or businesses with supply chains touching India, a few practical takeaways stand out:

  • Freight costs are trending down on corridors where expressways have opened, as journey times shrink and fuel efficiency improves.
  • Toll budgeting needs regular review — with WPI-indexed annual rate revisions and shifting GNSS rules, cost models built even a year ago may already be out of date.
  • Digital compliance matters — vehicles operating in India need to be FASTag-compliant from day one, and commercial fleets should track the GNSS rollout closely, since VLT-fitted vehicles are early adopters of the new system.
  • Regional connectivity is uneven — while flagship corridors like Delhi-Mumbai get global attention, due diligence on any specific route should always check current, verified completion status rather than headline project deadlines.

Key Takeaways

  • NHAI is the driving force behind India's expressway boom, primarily through the Bharatmala Pariyojana programme.
  • The Delhi-Mumbai Expressway remains the flagship project, with most sections operational but a few Gujarat packages delayed until 2028.
  • FASTag remains mandatory, but GNSS satellite tolling is gradually taking over, starting with commercial vehicles.
  • A Zero-Cash policy and tighter digital enforcement are reshaping how tolls are collected and recovered.
  • Road safety remains uneven, with newer expressways significantly safer than older mixed-traffic highways.
  • State highways continue to play a critical connective role, often overlooked in national headlines.

Frequently Asked Questions

What is NHAI and what does it do?
NHAI (National Highways Authority of India) is the government body responsible for building, upgrading, and maintaining India's National Highways. It operates under the Ministry of Road Transport and Highways and manages most large-scale highway and expressway projects, including toll collection.

Is FASTag still mandatory in 2026?
Yes. FASTag remains mandatory for all Class M and N vehicles on National Highways. Vehicles without a valid, active FASTag are charged double the standard toll at plazas, and a Zero-Cash policy introduced in April 2026 is phasing out cash lanes entirely.

What is GNSS tolling and how is it different from FASTag?
GNSS (satellite-based) tolling charges drivers based on the exact distance travelled, using an on-board unit rather than a roadside RFID scanner. It's being rolled out progressively, starting with commercial vehicles, and is expected to coexist with FASTag for several years before any full transition.

When will the Delhi-Mumbai Expressway be fully completed?
Most of the corridor is on track for completion in 2026, though a small number of packages in Gujarat's Vadodara-Mumbai section have been delayed to around March 2028 due to contractor-related issues.

What happens if a toll queue is too long?
Under NHAI rules, if the vehicle queue at a toll plaza exceeds 100 metres, vehicles are entitled to pass without paying the toll. This is a formal right for highway users, not a discretionary courtesy.

Are state highways as important as National Highways?
Yes, in terms of everyday use. State highways often carry significant local and regional traffic and connect rural areas to the national network, even though National Highways get most of the media and investment attention.