Tags:Economy
For Prelims: FASTag, Multi-Lane Free Flow (MLFF), National Highways Authority of India (NHAI), E-way Bill, Full form of MLFF, Nodal body, Current MLFF plazas (operational), Target for full implementation
Source:
Indian Express
5 facts for one-day exams
SSC, railway, police and teaching exams ask direct questions like these.
- MLFF stands for Multi-Lane Free Flow, a barrier-less tolling system.
- NHAI launched MLFF in May 2026, with Choryasi in Gujarat as the first plaza.
- Seven MLFF toll plazas are currently operational across India.
- Unidentified vehicles are those with covered, fake or impersonated number plates.
- MoRTH is considering a penalty of over twice the toll amount and FIR for violators.
Why in the news?
The Ministry of Road Transport and Highways (MoRTH) is developing a mechanism to identify vehicles that pass through Multi-Lane Free Flow (MLFF) toll plazas without paying user fee. Over 2.6 lakh such 'unidentified' vehicles were recorded at one Rajasthan plaza alone, raising concerns of revenue loss for NHAI and potential use of these vehicles for smuggling, illegal mining and GST evasion.
Summary
- MoRTH is devising a mechanism, involving investigating agencies and GST authorities, to identify vehicles that cross MLFF toll plazas without paying user fee, with measures including penalty of over twice the toll amount and FIR.
- Under MLFF, toll is deducted only when the FASTag and its linked number plate match; an 'unidentified' vehicle has a covered, fake or impersonated number plate, or an unreadable FASTag.
- MLFF is currently operational at seven fee plazas across India, and NHAI plans to implement it on all four-lane and wider national highways and expressways by March 2029.
Highlights
What is an 'Unidentified' Vehicle?
A vehicle whose number plate and FASTag are not visible, covered, fake or impersonated, so the MLFF system cannot match them and no toll is deducted.
MLFF: Barrier-less Tolling
NHAI's Multi-Lane Free Flow system allows vehicles to pass toll plazas without stopping, deducting toll via FASTag when its linked number plate matches.
Revenue Loss and Enforcement
Unidentified vehicles cause significant revenue loss for NHAI and banks; MoRTH is considering over double toll penalty and FIR registration as deterrents.
Background
NHAI launched the Multi-Lane Free Flow (MLFF) tolling system in May 2026 to eliminate congestion at toll plazas. Unlike traditional boom-barrier plazas that only required a functional FASTag, MLFF mandates a match between the FASTag and the vehicle's registered number plate. This technical upgrade has exposed a new category of toll violators: 'unidentified vehicles' that bypass the system entirely.
Key Analysis and Impact
The identification gap poses three major risks: first, revenue leakage for NHAI and concessionaire banks; second, potential use of untraceable vehicles for illegal activities like smuggling, illegal sand mining, and GST evasion, as the e-way bill system is linked to FASTag; third, it undermines NHAI's plan to expand barrier-less tolling across the country, as unchecked violations could reduce user compliance and trust. The problem is acute on the Gurgaon-Jaipur NH-48 corridor where all three plazas are MLFF, allowing an unidentified vehicle to travel the entire stretch toll-free.
Way Forward
MoRTH is developing a dedicated internal portal to share data across departments. Proposed measures include imposing a penalty of more than twice the toll amount and registering an FIR. AI will be used to match vehicle model and colour data from the VAHAN database with FASTag transactions at boom-barrier plazas, requiring a 10-minute processing window. A final decision on the enforcement mechanism is expected within a month. NHAI is also awarding MLFF contracts in a staggered manner to ensure cross-identification at mixed plaza types.
Traditional vs MLFF toll plaza
| Feature | Traditional Boom-Barrier Plaza | MLFF Barrier-Less Plaza |
|---|---|---|
| Stopping required | Yes | No |
| FASTag requirement | Functional FASTag only | FASTag must match number plate |
| Human intervention | Yes | No |
| Vehicle identification | Not required for toll deduction | Required for toll deduction |
Background GK
Textbook concepts you need to understand this news
- FASTag
- A radio-frequency identification (RFID) sticker affixed to a vehicle's windscreen that enables automatic toll deduction at plazas without stopping. It is linked to a prepaid or savings account.
- Multi-Lane Free Flow (MLFF)
- An electronic toll collection system that allows vehicles to pass through toll plazas at highway speed without stopping, using gantries that read FASTags and capture number plates.
- National Highways Authority of India (NHAI)
- An autonomous agency under the Ministry of Road Transport and Highways, responsible for the development, maintenance and management of national highways. Established in 1988.
- E-way Bill
- An electronic document required for the inter-state movement of goods valued over ₹50,000 under the GST regime, generated on the common GST portal.
Facts to remember
Tap a card to see the answer. Try to recall it first.
How exams will ask this
- Data: 7 MLFF plazas currently operational; target to cover all four-lane and wider highways by March 2029
- Nodal Body: Ministry of Road Transport and Highways (MoRTH) and National Highways Authority of India (NHAI)
- Legal Point: Proposed penalty of over twice the toll amount and FIR for unidentified vehicles
Don't make this mistake!
Examiners may confuse MLFF (Multi-Lane Free Flow) with FASTag or other toll collection systems. MLFF is barrier-less and requires FASTag-number plate matching; traditional plazas only need a functional FASTag. Also, the 72-hour window to pay insufficient balance is for e-notices, not for unidentified vehicles.
Stuck? Get it in one tap
Multi-Lane Free Flow (MLFF) is a system that lets vehicles pass toll plazas without stopping, using FASTag and number plate matching. Some vehicles cover or fake their number plates so the system cannot identify them, and they avoid paying toll. The government is now planning to penalise such vehicles with higher fines and even file criminal cases.
- MLFF stands for Multi-Lane Free Flow, a barrier-less tolling system.
- NHAI launched MLFF in May 2026, with Choryasi in Gujarat as the first plaza.
- Seven MLFF toll plazas are currently operational across India.
- Unidentified vehicles are those with covered, fake or impersonated number plates.
- MoRTH is considering a penalty of over twice the toll amount and FIR for violators.
- Economy: Infrastructure: Highways and Toll Systems
- Governance: E-Governance and Technology in Public Services
Related concepts: FASTag, Multi-Lane Free Flow (MLFF), National Highways Authority of India (NHAI), E-way Bill
Practice questions
Pick an answer, then read the explanation.
- Q1Medium
Which ministry is the nodal ministry for the National Highways Authority of India (NHAI)?
Explanation: NHAI is an autonomous agency under the Ministry of Road Transport and Highways (MoRTH), responsible for development and maintenance of national highways. The Ministry of Finance, Home Affairs, and Housing and Urban Affairs do not oversee NHAI.
- Q2Medium
Consider the following statements regarding the Multi-Lane Free Flow (MLFF) tolling system:
- 1.Under MLFF, toll is deducted only when the FASTag and its linked vehicle number plate match.
- 2.MLFF requires vehicles to stop at toll plazas for manual payment.
- 3.NHAI plans to implement MLFF on all four-lane and wider national highways by March 2029.
Which of the statements given above is/are correct?
Explanation: Statement 1 is correct: in MLFF, the FASTag and number plate must match for toll deduction. Statement 2 is incorrect: MLFF is a barrier-less system that does not require stopping. Statement 3 is correct: the Economic Survey 2025-26 projects MLFF implementation across all four-lane and wider highways by March 2029.
- Q3Medium
How many Multi-Lane Free Flow (MLFF) toll plazas are currently operational in India as of November 2026?
Explanation: MLFF is currently operational at seven fee plazas: Choryasi (Gujarat), Mundka (Delhi), Gharaunda (Haryana), Manoharpura, Daulatpura, Shahjahanpur (Rajasthan), and Paranur (Tamil Nadu). Contracts for 10 more have been awarded, and bids invited for an additional 104.
- Q4Medium
What is the primary objective of the Multi-Lane Free Flow (MLFF) system implemented by NHAI?
Explanation: MLFF is designed to allow vehicles to pass toll plazas without stopping, reducing congestion and travel time. Revenue increase is not its primary goal; it uses FASTag (not replaces it). Identifying illegal vehicles is a secondary concern arising from the system, not its objective.
Frequently asked questions
1. What is an 'unidentified vehicle' at a Multi-Lane Free Flow toll plaza?
An unidentified vehicle is one whose number plate and FASTag are not visible, covered, fake or impersonated, so the MLFF system cannot match them and no toll is deducted.
2. How many MLFF toll plazas are operational in India as of November 2026?
Seven MLFF toll plazas are operational: Choryasi (Gujarat), Mundka (Delhi), Gharaunda (Haryana), Manoharpura, Daulatpura, Shahjahanpur (Rajasthan), and Paranur (Tamil Nadu).
3. What is the target date for implementing MLFF on all four-lane and wider national highways?
According to the Economic Survey 2025-26, MLFF is projected to be implemented across all four-lane and wider national highways and expressways by March 2029.
4. What measures is the government considering against unidentified vehicles at MLFF plazas?
Measures under consideration include imposing a penalty of more than twice the toll amount and registering an FIR. A dedicated internal portal is being developed to identify such vehicles.
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- Original10 November 2026 · Read story
