NHAI Launches Tamil Nadu's First Barrierless MLFF Tolling System at Paranur

The National Highways Authority of India (NHAI) introduced Tamil Nadu's first barrierless Multi-Lane Free Flow (MLFF) tolling system at Paranur Toll Plaza on 1 October 2026, according to a GKToday report published on 2 October 2026. The plaza is on the Tambaram–Tindivanam section of NH-179B. Vehicles pass without stopping, and tolls are collected electronically through FASTag, with Automatic Number Plate Recognition (ANPR) cameras as a backup.

For exam preparation, this is a Science & Technology and infrastructure item. It links tolling technology, road-user charging and highway policy.

Key facts at a glance

What MLFF tolling means

The basic idea

Multi-Lane Free Flow tolling collects road-user fees without physical barriers at the plaza. Vehicles are identified electronically as they drive through, so they need not stop at a booth. A PIB release on another MLFF site (Gharaunda, NH-44) describes the system as using sensors and cameras on overhead gantries to identify vehicles and deduct fees through FASTag at highway speeds.

Technologies involved

• FASTag: uses Radio Frequency Identification (RFID) for electronic toll payment on national highways.
• ANPR: cameras read vehicle registration numbers. GKToday says they act as a backup when FASTag detection fails.

Why it matters

The stated aims are to cut congestion and travel time, improve fuel efficiency and lower vehicular emissions by removing stops at toll plazas. These benefits are the purposes given by the sources. This post does not include measured results from Paranur.

What road users need to know

GKToday says motorists should keep a working FASTag with enough balance to avoid an Electronic Notice (e-notice). The PIB release on Gharaunda, an earlier MLFF site, explains how this works there:

• An e-notice is issued when a toll payment is not processed through FASTag, for example because of low balance or an inactive tag.
• If paid within 72 hours, the fee is at the normal rate (1x). After 72 hours, it is twice the applicable rate (2x).
• Notices can be checked on a designated NIC portal using the vehicle number and an OTP, or on the Rajmargyatra app.
• A wrongly issued notice can be challenged through the portal within 72 hours.

The evidence supplied for Paranur does not confirm that these exact terms apply there. Treat the PIB details as general context for NHAI's MLFF approach. Details of the original release are on the PIB page for the Gharaunda rollout.

Where MLFF stands elsewhere in India

GKToday says NHAI has already implemented MLFF-based tolling in parts of Gujarat, Delhi-NCR, Rajasthan and Haryana. The PIB release of 25 June 2026 names Choryasi (Gujarat), Mundka (Delhi) and Daulatpura (Rajasthan) as earlier implementations. It describes Gharaunda (Haryana) as a rollout that had commenced on that date.

Planned in Tamil Nadu

As of 2 October 2026, these items are plans, not completed events:

• MLFF is planned for Nemili and Chennasamudaram on the Chennai–Bengaluru Highway after Paranur.
• Bids have been invited for the Chennai Bypass.

GKToday says NHAI is rolling out MLFF in phases. The supplied sources give no dates for these next sites.

Exam-relevant points

• Remember the place and highway: Paranur Toll Plaza, Tambaram–Tindivanam section, NH-179B.
• Remember the expansions: MLFF stands for Multi-Lane Free Flow, and ANPR for Automatic Number Plate Recognition.
• Be clear on the roles: FASTag (RFID) is the payment mechanism, and ANPR is a backup identification layer.
• Keep apart the launch date (1 October 2026) and the report date (2 October 2026).

This post does not predict whether any exam will ask about this topic. It only collects the facts the sources support.

Evidence limits

• The Paranur launch details come from one secondary report (GKToday). The supplied evidence has no NHAI or PIB release for Paranur.
• The sources do not give Paranur toll rates, the number of lanes or gantries, or any measured effect on traffic.
• Check an official NHAI or PIB notice before quoting finer details in an answer.

FAQ

When was the Paranur MLFF system launched?

GKToday reports that NHAI introduced it on 1 October 2026. The report itself was published on 2 October 2026.

What happens if FASTag fails at an MLFF plaza?

GKToday says ANPR cameras act as a backup by reading the number plate. If payment is not processed, an e-notice may be issued. At Gharaunda, PIB describes a 72-hour window for paying at the normal rate.