When submitting a proposal for highway access, every line on your drawing has to be justified by a specific rule or standard. For India’s road sector, that rulebook is written by the Indian Roads Congress (IRC). Citing and adhering to the correct IRC codes is not just good practice—it is the difference between a swift approval and a rejected application.

While your highway consultant will manage the technical details, understanding which codes are most important can empower you as a developer or franchisee to appreciate the complexity and ensure your project is compliant from the start.

This guide breaks down the essential IRC codes that form the technical backbone of any access permission application submitted to NHAI or State PWDs.

1. The Foundation: Geometric Design

These codes govern the fundamental layout and dimensions of the road and access lanes.

  • IRC:73-1980 – Geometric Design Standards for Rural (Non-Urban) Highways: This is the foundational text for highway alignment. It dictates the basic parameters like lane width, shoulder width, sight distance, and the design of horizontal and vertical curves. Every access road design begins with the principles laid out here.
  • IRC:86-1983 – Geometric Design Standards for Urban Roads: If your property is in an urban or semi-urban area, this code becomes more relevant. It provides standards for roads with curbs, footpaths, and different traffic compositions.

2. The Specifics: Fuel Stations and Private Access

These codes provide the explicit, non-negotiable rules for different types of properties.

  • IRC:12-2016 – Guidelines for Access, Location and Layout of Roadside Fuel Stations: This is the single most important code for any petrol bunk franchisee. It contains the definitive rules on:
    • Minimum distance from intersections and other fuel stations.
    • Required lengths and tapers for deceleration and acceleration lanes.
    • Design of service roads and internal circulation.
    • Almost all conditions in the official MoRTH circulars for fuel stations are directly based on this IRC code.
  • IRC:SP:99-2013 – Manual of Specifications and Standards for Four Laning of Highways: For properties along high-speed, 4- or 6-lane corridors, this “Special Publication” provides the standards for service roads, which are mandatory for providing access without disrupting through traffic.

3. The Finishing Touches: Safety and Signage

These codes cover the critical safety and informational elements that complete your access design. An application is incomplete without addressing them.

  • IRC:67-2012 – Code of Practice for Road Signs: This code governs the type, size, location, and design of every traffic sign. Your plan must include a detailed signage layout, showing where signs like “Merge Ahead,” “Stop,” and “Entry” will be placed. Non-compliance is a major safety violation.
  • IRC:35-2015 – Code of Practice for Road Markings: This standard dictates the design of all painted markings on the road surface. This includes the solid white lines separating the service road, the chevron markings for the taper, and any lettering. Using high-quality, retro-reflective thermoplastic paint as specified here is essential for night-time safety.
  • IRC:103-2012 – Guidelines for Pedestrian Facilities: For public-facing properties like hotels, malls, or even busy fuel stations, this code is crucial. It provides guidelines for designing safe footpaths, crosswalks, and other facilities to protect pedestrians, demonstrating a commitment to overall site safety.

Conclusion:

While this list may seem technical, its message is simple: highway design is a science. Every element of your access plan must be backed by a specific standard developed by the Indian Roads Congress (IRC) to ensure safety, efficiency, and uniformity across the national network. Working with a consultant who is fluent in these codes is your best insurance against costly delays and rejections.