Conflict Point Detection Using AI for Safer IRC:65 Intersection Planning

Intersection safety is one of the most critical challenges in India's rapidly expanding road network. As urbanisation accelerates and traffic volumes grow, junctions are increasingly exposed to complex interactions between vehicles, pedestrians, cyclists, and two-wheelers.

For agencies and consultants working under road asset management in India, improving intersection safety now requires more than geometry checks and compliance reports. It demands tools that can interpret how intersections actually operate on the ground.

In this context, AI-based conflict point detection is emerging as a powerful approach to support safer IRC:65 intersection planning, enabling data-driven design decisions and measurable safety improvements.

IRC:65 provides detailed geometric and operational guidance for at-grade intersections. However, design compliance alone does not always guarantee safe outcomes. The gap between design intent and real-world behaviour is where AI intersection safety analysis delivers significant value.

Conflict Detection

1. Why Intersection Safety Under IRC:65 Needs Operational Intelligence

IRC:65 aims to reduce crash risk through:

  • Channelisation and controlled movements to separate conflicting flows
  • Adequate sight distance for driver reaction
  • Proper turning radii and lane discipline for vehicle stability
  • Safe pedestrian crossing provisions for vulnerable users
  • Signal phasing for controlled intersections
  • Traffic calming where appropriate

Yet Indian intersections operate under mixed traffic conditions where behaviour is often unpredictable.

Even when an intersection meets geometric standards, unsafe manoeuvres such as:

  • Late lane changes near junction entries
  • Aggressive turning movements cutting across lanes
  • Wrong-way entries at divided approaches
  • Informal pedestrian crossings outside designated zones
  • Two-wheeler weaving through stationary traffic
  • Heavy vehicle turning conflicts with smaller vehicles

continue to occur.

Addressing these risks requires moving beyond drawings and into operational performance assessment using AI-based junction safety assessment through the Road Safety Audit Agent.

2. Understanding Conflict Points in IRC:65 Intersection Design

Conflict points are locations where road user paths:

  • Cross (perpendicular intersection)
  • Merge (entering the same lane)
  • Diverge (separating from traffic stream)

IRC:65 focuses on minimising both the number and severity of these interactions through layout optimisation.

However, not all conflict points carry the same level of danger. Some occur routinely without incidents, while others generate repeated near-misses that signal high crash potential.

AI-based conflict point detection through the Traffic Analysis Agent helps engineers objectively identify which interactions represent genuine safety threats, allowing interventions to be prioritised based on real risk rather than assumptions.

3. Types of Conflict Points at Intersections

3.1 Crossing Conflicts

  • Vehicle paths crossing at right angles
  • Most common at uncontrolled intersections
  • High severity potential

3.2 Merging Conflicts

  • Vehicles entering the same lane
  • Common at on-ramps and channelised turns
  • Speed differential creates risk

3.3 Diverging Conflicts

  • Vehicles separating from traffic stream
  • Common at off-ramps and turn lanes
  • Late lane changes increase risk

3.4 Pedestrian Conflicts

  • Vehicle-pedestrian crossing paths
  • High vulnerability for pedestrians
  • Common at crosswalks and corners

3.5 Cyclist Conflicts

  • Vehicle-cyclist interactions
  • Often at turning movements
  • Visibility challenges

4. Why Traditional Safety Audits Are No Longer Enough

Conventional intersection safety reviews depend on short-duration field observations and historical crash records. In Indian conditions, this approach has major limitations:

  • Near-miss events are rarely documented, leaving risk patterns hidden
  • Crash data is often delayed or incomplete, slowing response
  • Observations vary between audit teams, creating inconsistency
  • Mixed traffic behaviour is difficult to quantify manually
  • Peak-hour conditions may not be captured
  • Night-time and adverse weather conditions are rarely observed
  • Seasonal variations in traffic patterns are missed

As a result, many safety risks remain hidden until serious crashes occur.

Integrating AI into road safety audit workflows through the Road Safety Audit Agent enables continuous and unbiased evaluation of intersection performance.

5. How AI-Based Conflict Point Detection Works

AI systems through the Traffic Analysis Agent use video data captured from:

  • Fixed junction cameras for permanent monitoring
  • Drone surveys for comprehensive coverage
  • Mobile survey vehicles for network-wide assessment

The platform detects and tracks every road user, converting movement into digital trajectories.

When two trajectories come dangerously close in time and space, the system identifies a conflict event. Key parameters such as:

  • Approach speed and speed differential
  • Conflict angle (head-on, crossing, rear-end)
  • Time-to-collision (TTC) before potential impact
  • Post-encroachment time (PET) between users
  • Evasive braking or swerving indicating near-miss
  • Distance at closest approach

are analysed to assess severity.

This forms the foundation of AI intersection safety analysis, providing measurable evidence for safer planning aligned with IRC:65 principles.

6. Key Conflict Metrics

6.1 Time-to-Collision (TTC)

  • Time remaining before collision if trajectories continue unchanged
  • Lower TTC indicates higher risk
  • Critical threshold: < 1.5 seconds
  • High risk: 1.5-3.0 seconds

6.2 Post-Encroachment Time (PET)

  • Time between first user leaving conflict zone and second user entering
  • Lower PET indicates near-miss events
  • Critical threshold: < 2 seconds

6.3 Conflict Severity Classification

SeverityDescriptionTTCPETCriticalEvasive action required, imminent collision< 1.5s< 2sModeratePotential conflict with awareness1.5-3s2-4sMinorObservable but comfortable margin> 3s> 4s

7. Strengthening IRC:65 Compliance Through Behaviour-Based Insights

AI does not replace IRC:65 design guidance — it strengthens its implementation.

Conflict analysis helps engineers verify whether:

  • Turning lanes are functioning correctly without weaving
  • Channelisation islands are respected by drivers
  • Pedestrian crossings are being used safely without illegal crossings
  • Sight distance assumptions match real driver behaviour at approaches
  • Signal timing accommodates actual crossing times
  • Two-wheeler behaviour aligns with design assumptions
  • Heavy vehicle turning paths are adequately provided

These operational insights reveal design deficiencies that may not be visible in drawings, improving both new intersection design and retrofit planning.

8. AI-Based Junction Safety Assessment in Mixed Traffic Conditions

Indian intersections carry a wide range of users with different movement patterns and speed profiles.

AI-based junction safety assessment through the Traffic Analysis Agent performs especially well in such environments by analysing all users simultaneously, including:

  • Two-wheelers weaving through turning traffic at high risk
  • Auto-rickshaw stopping behaviour affecting flow
  • Pedestrians crossing outside designated zones creating unexpected conflicts
  • Heavy vehicle turning conflicts with passenger vehicles
  • Cyclist interactions at intersections
  • Public transport vehicle manoeuvres at stops

These insights directly support proactive safety upgrades under modern intelligent traffic safety systems.

9. Common Conflict Patterns in Indian Intersections

9.1 Right-Turn Conflicts

  • Vehicles turning across opposing traffic
  • Gap acceptance issues
  • Aggressive turning cutting across lanes

9.2 Left-Turn Conflicts

  • Merging with through traffic
  • Pedestrian conflicts at crossings
  • Cyclist interactions

9.3 Through Movement Conflicts

  • Red-light violations
  • Speeding through intersections
  • Weaving between lanes

9.4 Pedestrian Conflicts

  • Crossing against signals
  • Mid-block crossings near intersections
  • Vehicle turning across crosswalks

10. Integration With Road Asset Management Workflows

Intersection safety is closely linked to the condition and visibility of assets.

Conflict detection becomes even more effective when integrated with broader asset intelligence such as:

  • Road inventory inspection (signage, markings, barriers) from the Roadside Assets Inventory Agent
  • Pavement condition survey (surface friction, rutting near stop zones) from the Pavement Condition Intelligence Agent
  • Lighting and visibility infrastructure for night safety
  • Signage condition for driver guidance
  • Marking retroreflectivity for night visibility

For example, repeated braking-related conflicts may indicate poor skid resistance, while pedestrian conflicts may reflect missing signs or ineffective barriers.

This integrated approach strengthens road asset management India by connecting safety risk directly to asset investment priorities.

11. Role of Traffic Exposure in Conflict Evaluation

Conflict frequency alone does not define intersection risk. Exposure plays a critical role.

By combining AI conflict outputs with traffic survey data from the Traffic Analysis Agent, engineers can normalise safety risk based on:

  • Traffic volumes by movement
  • Vehicle mix (cars, two-wheelers, heavy vehicles)
  • Peak-hour demand and directional splits
  • Pedestrian activity levels at crossings
  • Cyclist volumes where present
  • Seasonal variations in usage

This ensures that high-risk intersections are prioritised accurately, supporting smarter funding allocation and targeted improvements.

12. How RoadVision AI Enables Smarter Intersection Planning

RoadVision AI enables scalable deployment of AI-driven intersection safety solutions aligned with Indian road standards through its integrated suite of AI agents.

The platform combines:

into a unified workflow.

13. Final Thought

IRC:65 provides strong geometric and operational guidance for intersection design, but true safety depends on how junctions perform under real-world traffic behaviour.

AI-based conflict point detection through the Traffic Analysis Agent bridges this gap by revealing behavioural risks and near-miss patterns that traditional methods often miss.

The platform's ability to:

  • Track all road users simultaneously at intersections
  • Detect near-miss events invisible in crash data
  • Quantify conflict severity with objective metrics
  • Normalise risk by exposure for accurate prioritisation
  • Integrate all data sources for unified safety management
  • Support IRC:65 compliance with automated reporting
  • Scale from single junctions to network-wide efficiently

transforms how intersection safety is assessed across India.

By integrating automated intersection safety analysis into planning and audit workflows, road authorities can:

  • Improve safety outcomes through proactive intervention
  • Optimise intersection design based on actual behaviour
  • Strengthen data-driven investment decisions with objective evidence
  • Advance sustainable road asset management in India

RoadVision AI is transforming infrastructure development and maintenance through advanced AI and computer vision. The platform enables proactive road safety audits, early detection of pavement defects, and intelligent traffic insights — all while ensuring compliance with IRC Codes.

Book a demo with RoadVision AI today to modernise intersection safety planning with real-world behavioural intelligence.

FAQs

Q1. How does AI support IRC:65 intersection planning?

AI evaluates real traffic behaviour to validate design effectiveness beyond drawings.

Q2. Can AI be applied to existing intersections?

Yes AI analyses video data without requiring physical modifications.

Q3. Does AI replace traditional safety audits?

No AI enhances audits by providing objective and continuous safety data.