IRC Code 35: Ensuring Safety at Intersections with Transverse Road Markings

Intersections are among the most complex and high-risk locations on any road network. Vehicles, pedestrians, cyclists, and turning traffic all converge at a single point, making clear visual guidance essential for safe movement. This is where Transverse Road Markings play a critical role.

Defined under IRC:35-2015 – Code of Practice for Road Markings, these markings help regulate stopping, yielding, pedestrian movement, and speed control at junctions. When properly designed and maintained, they significantly improve traffic discipline, reduce conflicts, and enhance overall intersection safety.

Today, advanced technologies such as AI road marking inspection India, automated pavement marking detection India, and AI roadway safety management solutions are helping authorities monitor marking conditions, identify compliance gaps, and maintain safer intersections more efficiently.

All you need to know about Road Marking in India
Road Markings

What Are Transverse Road Markings?

Transverse road markings are pavement markings applied across the direction of traffic flow. Under IRC Code 35:2015, they are used to regulate driver behavior at intersections, pedestrian crossings, and traffic-calming zones.

Their primary functions include:

  • Controlling stopping and yielding behavior
  • Improving pedestrian visibility
  • Supporting traffic signal operations
  • Enhancing driver awareness
  • Reducing conflict points at intersections

These markings act as silent traffic controllers, providing visual instructions even when drivers are unfamiliar with the road environment.

Why Transverse Road Markings Are Critical for Intersection Safety

Intersections account for a significant percentage of urban road crashes due to multiple traffic movements occurring simultaneously.

Properly maintained transverse markings help:

  • Reduce vehicle conflicts
  • Improve driver reaction time
  • Enhance pedestrian protection
  • Reinforce regulatory signs and signals
  • Improve overall traffic flow

Today, AI intersection marking compliance India platforms are helping authorities evaluate marking visibility, detect deterioration, and improve compliance with IRC standards across large road networks.

Types of Transverse Road Markings Under IRC Code 35:2015

Stop Lines (TM01)

Stop lines indicate the exact location where vehicles must come to a complete stop.

IRC Code 35 specifies:

  • Solid white transverse line
  • Positioned before intersections or crosswalks
  • Typically 150 mm wide
  • Located to provide adequate visibility of conflicting traffic

Stop lines are essential at:

  • Signalized intersections
  • Stop-controlled junctions
  • Railway crossings

Using AI road marking condition assessment systems, agencies can identify faded stop lines before they become safety hazards.

Give Way (Yield) Lines (TM02 & TM03)

Yield markings indicate locations where drivers must give priority to other traffic streams.

Typical specifications include:

  • Broken transverse white lines
  • Installed at unsignalized intersections
  • Supported by yield signs

These markings help improve traffic efficiency while maintaining safety at lower-volume junctions.

Modern AI highway safety assessment platforms can automatically identify missing or worn yield markings during roadway inspections.

Zebra Crossings (BM01)

Pedestrian crossings are among the most important pavement markings for protecting vulnerable road users.

IRC standards recommend:

  • White rectangular stripes
  • Width generally between 2.5 and 4 meters
  • Placement near schools, hospitals, bus stops, and signalized intersections

With growing pedestrian activity in urban areas, AI pedestrian crossing marking detection and AI zebra crossing condition monitoring systems are becoming valuable tools for maintaining safe crossing facilities.

Transverse Speed Reduction Bars

Speed reduction bars alert drivers to upcoming intersections or pedestrian activity.

Benefits include:

  • Audible warning effect
  • Vehicle vibration feedback
  • Psychological speed reduction

They are commonly installed near:

  • School zones
  • Pedestrian crossings
  • High-risk intersections
  • Accident-prone road segments

Automated inspections help ensure these markings remain visible and effective over time.

Material Requirements Under IRC Code 35

The effectiveness of pavement markings depends heavily on visibility and durability.

IRC:35 recommends:

Thermoplastic Markings

  • Long service life
  • High durability
  • Excellent night visibility

Cold Applied Plastics

  • Suitable for high-traffic roads
  • Strong wear resistance

Preformed Marking Tapes

  • Fast installation
  • High visibility performance

For nighttime safety, embedded glass beads provide retroreflective properties.

This is where AI road marking retroreflectivity monitoring technologies are helping agencies evaluate marking performance without relying solely on manual inspections.

Design and Placement Best Practices

Proper placement is just as important as proper design.

Key requirements include:

  • Adequate stopping sight distance
  • Alignment with traffic signs
  • Consistent placement across jurisdictions
  • Visibility during day and night conditions

Poorly positioned markings can create confusion and reduce driver compliance.

Using AI roadway safety management platforms, engineers can identify geometric and visibility issues affecting marking performance.

Importance of Maintenance and Compliance Monitoring

Road markings gradually fade due to:

  • Traffic wear
  • UV exposure
  • Rainfall
  • Surface deterioration

IRC Code 35 emphasizes regular evaluation through:

  • Retroreflectivity testing
  • Wear assessment
  • Skid resistance checks
  • Scheduled repainting

Today, AI faded road marking detection, automated road marking wear detection, and automated road marking maintenance AI solutions provide faster and more objective monitoring than traditional field inspections.

Where Transverse Road Markings Are Essential

Proper transverse markings are mandatory at:

  • Urban signalized intersections
  • Rural T-junctions
  • Roundabout entries
  • School zones
  • Hospital approaches
  • Pedestrian-heavy corridors
  • Speed management zones

Consistent application improves driver expectations and reduces accident risks.

How AI Is Transforming Road Marking Inspections

Managing pavement markings across thousands of kilometers of roadway is difficult using manual methods alone.

Modern technologies such as automated pavement marking detection India and AI-powered road safety systems allow authorities to inspect road markings continuously using cameras, vehicle-mounted systems, and computer vision algorithms.

These systems automatically detect:

  • Faded stop lines
  • Damaged zebra crossings
  • Missing yield markings
  • Retroreflectivity issues
  • Compliance gaps with IRC standards

The result is faster maintenance planning and improved roadway safety outcomes.

How RoadVision AI Supports IRC Code 35 Compliance

RoadVision AI helps agencies modernize pavement marking management through advanced AI-powered roadway analytics.

Using computer vision and geospatial analytics, RoadVision AI enables road authorities to identify deficiencies early, prioritize maintenance, and improve compliance with IRC Code 35:2015.

Final Thoughts

IRC Code 35:2015 provides the foundation for safe and standardized pavement markings across India's road network. Stop lines, yield markings, zebra crossings, and speed reduction bars all play a crucial role in regulating traffic and protecting road users at intersections.

As road networks continue to expand, maintaining these markings efficiently requires a combination of engineering best practices and advanced technology. Solutions such as AI highway safety assessment and smart road marking monitoring systems enable authorities to improve compliance, reduce maintenance delays, and enhance intersection safety nationwide.

As a Best highway road safety audit company, RoadVision AI helps transportation agencies build safer, smarter, and more compliant road networks through intelligent pavement marking monitoring and roadway analytics.

FAQs

Q1. What are transverse road markings under IRC Code 35?

They are pavement markings placed across the direction of traffic, including stop lines, yield lines, zebra crossings, and speed reduction bars that regulate vehicle and pedestrian movement.

Q2. Why are transverse road markings important at intersections?

They provide clear instructions for stopping, yielding, and pedestrian priority, reducing confusion and minimizing collision risks.

Q3. How can AI improve road marking inspections?

AI systems automatically identify faded markings, compliance issues, and maintenance requirements, enabling faster inspections and more effective roadway safety management.