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NHAI Issues New Guidelines for High-Speed Corridors: Lane Norms, Barrier-less Tolling, and Vision 2047 Target

InfrastructurePolityEconomyHIGH
Target:UPSCMPSCSSC GATeachingPrelims HighMains MediumStatic GK Link
22 Sept 2026
~2 min
Source: Indian Express
Key Data:50,000 km by 2036-373,052 km (Dec 2025)PCU ≤15,000 -> 4-lanePCU 15,000-25,000 -> 4-lane/6-lane structuresPCU 25,000-40,000 -> 6-laneGantry distances: 5 km, 2 km (full overhead); 1 km, 500 m (cantilever)
Bodies:NHAI
Practice MCQs from today's news ▸
What This Article Covers

1.NHAI issued detailed guidelines for high-speed corridors to ensure uniformity in design and standards across projects.

2.Lane configuration determined by PCU traffic: 4-lane for up to 15,000 PCU, 4-lane with 6-lane structures for 15,000-25,000 PCU, 6-lane for 25,000-40,000 PCU.

3.Key provisions include barrier-less tolling (MLFF), 1m high RCC boundary wall, underpass height of 4.5m for heavy agriculture machinery, and drip irrigation in median.

The Big Picture
Prelims · HighMains · Medium

NHAI has issued comprehensive guidelines for the design and construction of high-speed corridors (expressways), including lane norms based on traffic volume (PCU), access control, signage, barrier-less tolling, and boundary walls. This move aims to standardize DPR preparation and aligns with India's Vision 2047 target of 50,000 km of high-speed corridors by 2036-37. Students must note the PCU thresholds, signage distances, and the RCC boundary wall height for prelims.

Exam Lens

Quick Exam Facts From News

Target Length50,000 km high-speed corridors by 2036-37 (Vision 2047)
Current Length3,052 km (as of Dec 2025)
PCU Thresholds≤15,000: 4-lane; 15,000-25,000: 4-lane/6-lane structures; 25,000-40,000: 6-lane
Signage Gantry DistancesFull overhead: 5 km & 2 km; Cantilever: 1 km & 500 m before exit
Lane Marking Width150 mm (lane), 200 mm (edge-line)
Boundary Wall Height1 m (RCC)
Underpass Height4.5 m for heavy agriculture machinery

1-Minute Revision

  • ›Target Length: 50,000 km high-speed corridors by 2036-37 (Vision 2047)
  • ›Current Length: 3,052 km (as of Dec 2025)
  • ›Target this Data: PCU thresholds for lane configuration: ≤15,000 (4-lane), 15,000-25,000 (4-lane/6-lane structures), 25,000-40,000 (6-lane)
  • ›Target this Nodal Body: National Highways Authority of India (NHAI)
  • ›Target this Target: 50,000 km high-speed corridors by 2036-37 under Vision 2047

Mastered this topic? Test your knowledge with a full MCQ quiz.

Practice exam-style questions, track your score, and strengthen your recall.

Q1Static LinkageEasy

Which ministry is the National Highways Authority of India (NHAI) primarily under?

Q2Statement-basedHard

Consider the following statements regarding NHAI's new guidelines for high-speed corridors:

1. Lane configuration is determined based on passenger car unit (PCU) traffic.

2. Full overhead gantries carrying direction signs shall be placed 1 km and 500 metres before an exit.

3. The barrier-less tolling system is referred to as Multi-Lane Free Flow (MLFF).

Which of the statements given above is/are correct?

Q3Data-centricMedium

According to the NHAI guidelines, what is the target length of high-speed corridors to be achieved by 2036-37 under Vision 2047?

Q4Application/ImpactMedium

Why did NHAI mandate a 1 metre high RCC boundary wall along the extreme outer edge of the Right of Way (ROW) for high-speed corridors?

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