Highway Incident Management System: How ATMS & VIDES Reduce Response Time

On a highway, the time between an incident happening and someone knowing about it can determine almost everything that follows.

Whether an injured person receives assistance quickly. Whether one collision turns into a secondary pile-up. Whether a blocked lane causes kilometres of congestion. Whether emergency teams reach the location with the information they need.

Traditionally, that first notification could depend on another driver making a phone call, a patrol vehicle passing the location, or an operator noticing something on a camera feed.

None of those methods is reliable enough on a high-speed highway network.

A modern highway incident management system changes that equation by combining continuous video monitoring, AI-based incident detection, command-centre operations, communication networks, Variable Message Signs and coordinated emergency response.

At the centre of this approach is an Advanced Traffic Management System (ATMS), with Video Incident Detection and Enforcement System (VIDES) providing automated detection and alerting.

NHAI's updated ATMS Standards and Specifications 2023 specifically include VIDES, video surveillance, VMS, OFC-based communication, ATMS command and control systems and other supporting subsystems. The objective is not simply to watch the highway, but to identify incidents faster, support enforcement and improve response.

What Is a Highway Incident Management System?

A highway incident management system is the combination of technology, people, communication infrastructure and operating procedures used to detect, verify, respond to and clear incidents on a road corridor.

The incidents may include:

• Road accidents and collisions
• Wrong-way driving
• Stopped or broken-down vehicles
• Congestion and queue formation
• Pedestrians or animals on the carriageway
• Debris and road obstructions
• Lane or direction violations
• Unsafe parking
• Other abnormal traffic conditions

The objective is simple:

Detect the problem quickly, understand what is happening, send the right response and warn other road users before the situation becomes worse.

An ATMS provides much of the technology required to make this process work at corridor scale.

VIDES provides automated video-based detection.

The command centre coordinates the response.

VMS and other traveller-information systems communicate warnings to approaching drivers.

Emergency teams, patrol vehicles, police and recovery vehicles then act on the information.

That is the difference between simply monitoring a highway and actively managing incidents on it.

How ATMS Supports Highway Incident Management

An Advanced Traffic Management System (ATMS) is an integrated platform that connects multiple highway monitoring, communication, enforcement and response systems into a coordinated operational environment.

The exact configuration varies according to the corridor, project requirements and applicable specifications. NHAI's 2023 ATMS framework includes subsystems such as video surveillance/traffic monitoring cameras, VIDES, Vehicle Actuated Speed Display Systems, Variable Message Signs, OFC communication, emergency call boxes, mobile radio communication, the ATMS command and control centre and power systems.

GreenTech ITS's ATMS offering similarly brings together traffic monitoring, VIDES, VMS, emergency communication, traffic data systems and command-centre functionality into an integrated platform.

The important distinction is this:

CCTV provides visibility.

VIDES provides automated detection.

ATMS connects detection to operational response.

A camera can show an accident.

An incident management system should help the operator know that the accident has occurred, where it is, what is happening, who needs to respond and what warning should be sent to approaching traffic.

What Is a Video Incident Detection System?

A video incident detection system uses cameras and video analytics to identify abnormal events in a live traffic environment.

In the current NHAI terminology, VIDES — Video Incident Detection and Enforcement System — extends video analytics beyond incident detection into digital enforcement.

NHAI's 2023 ATMS policy introduced VIDES as an upgraded approach using AI-based video analytics. The system is designed to identify multiple incident and violation categories, including wrong-direction driving, pedestrian crossings, animals and certain safety violations, with capabilities for alerts and enforcement integration.

This is important because a highway control room may receive feeds from a large number of cameras.

A human operator cannot watch every camera continuously with equal attention.

AI-based analytics can continuously analyse the configured video streams and identify events that require attention.

The operator can then verify the alert instead of searching through dozens or hundreds of screens hoping to notice the event.

What Can VIDES Detect on Highways?

The exact detection categories depend on the system configuration, camera placement, analytics and project specifications.

Common applications include:

Road accidents and collisions

When vehicles collide or an abnormal traffic event occurs, video analytics can identify the event and generate an alert for operator verification.

The benefit is not that the system replaces human judgement.

The benefit is that it brings the event to the operator's attention quickly.

Stopped and broken-down vehicles

A vehicle stopped on a live carriageway or shoulder can become a hazard, particularly on high-speed corridors.

Automated detection can identify prolonged or abnormal stoppage and alert the command centre.

Congestion and queue formation

Traffic queues often begin before they become visible to an operator looking at a distant camera.

Analytics can monitor traffic movement and identify abnormal congestion patterns, allowing operators to investigate and warn approaching drivers.

Wrong-way driving

Wrong-way driving is one of the most critical applications because the available response window can be extremely short.

A vehicle travelling against the permitted direction can create a direct collision risk for vehicles approaching from the opposite direction.

Automated wrong way driving detection can identify the abnormal direction of travel and generate an immediate alert for verification and response.

Pedestrians and animals

Pedestrians or animals entering a high-speed carriageway can create an immediate safety risk.

AI-based detection can help identify such events and notify operators so that appropriate response measures can be initiated.

Debris and other obstructions

Objects on the road can cause sudden braking, lane changes and secondary collisions.

Where configured for the project, video analytics can identify abnormal objects or obstructions and bring them to the operator's attention.

How a Highway Incident Management System Reduces Response Time

The technology only matters if it shortens the operational chain.

A well-designed highway incident management system follows a straightforward sequence:

1. Detect

Video analytics identify an abnormal event and generate an alert.

2. Alert

The command centre receives the alert with information such as camera location, event category and the relevant video feed.

3. Verify

An operator reviews the video and confirms whether the event is genuine.

Verification is important.

Automated detection should accelerate decision-making, not remove operational judgement.

4. Dispatch

The appropriate response is initiated.

Depending on the incident, that could involve:

• Highway patrol
• Ambulance
• Police
• Recovery vehicle
• Maintenance team
• Traffic management personnel

The response team can receive the incident location and available visual information before reaching the site.

5. Warn

This is where incident detection becomes highway safety management.

Variable Message Signs can warn approaching drivers about:

• Accidents
• Lane closures
• Congestion
• Slow traffic
• Diversions
• Other safety conditions

The earlier approaching traffic receives a meaningful warning, the greater the opportunity to reduce secondary incidents.

6. Manage

The control centre coordinates traffic management while the incident is being handled.

Depending on the corridor, this can include lane management, diversion information, field-team coordination and communication with relevant agencies.

7. Record

The event, alerts, timestamps, video and response actions can be recorded for operational review, reporting and system improvement.

The complete chain looks like this:

Detect → Alert → Verify → Dispatch → Warn → Manage → Record

That is the real purpose of highway incident management.

The objective is not simply to detect an accident.

It is to reduce the time between incident occurrence and effective response.

Wrong-Way Driving Detection: Why It Matters

Wrong-way driving is relatively uncommon compared with congestion or routine traffic violations.

But the consequences can be severe.

A vehicle travelling in the wrong direction on a high-speed road may encounter approaching vehicles with very little time for avoidance.

This makes wrong way driving detection an important application of AI-based video analytics.

A typical detection workflow involves:

Camera monitoring

↓

Vehicle movement analysis

↓

Direction-of-travel assessment

↓

Wrong-way event detection

↓

Command-centre alert

↓

Operator verification

↓

Driver warning / field response

Depending on the project configuration, the event can also be used to trigger downstream operational actions.

The 2023 NHAI ATMS framework specifically includes wrong-direction driving among the incident and violation categories supported by VIDES.

ATMS vs CCTV vs VIDS vs VIDES

These terms are often used interchangeably, but they do not mean the same thing.

The distinction matters when planning a highway project.

Buying cameras is not the same as implementing incident management.

The camera is the sensing layer.

The analytics provide interpretation.

The communication network moves the information.

The command centre coordinates action.

And the field teams complete the response.

Automated Enforcement and e-Challan Integration

A modern highway incident management architecture can also support enforcement.

Depending on project requirements and integration, VIDES can detect configured traffic violations, capture evidence and provide information to enforcement systems.

NHAI's ATMS 2023 framework specifically provides for API-based e-challan integration through VIDES, along with integrations such as Rajmarg Yatra and NHAI One.

This creates an important operational advantage.

The same field infrastructure can support both:

Safety management

and

Digital enforcement

Instead of maintaining completely separate camera networks for every function, an integrated architecture can allow infrastructure to serve multiple operational requirements.

The exact enforcement categories and integrations should always be defined according to the project specification and applicable authority requirements.

ATMS Communication Network: OFC, Wireless RF and GSM

The communication network is one of the least visible but most important parts of an ATMS deployment.

Field devices may be distributed across tens or hundreds of kilometres.

Cameras need to transmit data.

Alerts need to reach the command centre.

VMS messages need to be updated.

Operators need access to live feeds.

Field teams need reliable communication.

NHAI's ATMS 2023 framework includes an OFC-based communication backbone as part of the standard ATMS architecture, while project-specific deployments may also use other communication technologies according to corridor conditions and requirements.

Depending on the corridor, the architecture may include:

• Optical fibre communication
• Wireless RF
• GSM/mobile communication
• Redundant communication paths
• Network monitoring
• Managed switches and field networking equipment

The right answer is rarely simply “use fibre everywhere”.

Terrain, duct availability, construction constraints, distance, redundancy requirements and operational criticality all influence the network design.

A highway incident management system is only as reliable as the communication infrastructure carrying its alerts.

Why Power and Uptime Matter

A sophisticated analytics platform cannot detect anything if the field camera is offline.

Remote highway locations introduce practical engineering challenges:

• Unstable power
• Long cable routes
• Difficult maintenance access
• Extreme weather
• Network failures
• Equipment faults
• Environmental exposure

Solar-assisted or backup power can therefore be an uptime decision rather than simply a sustainability feature.

Similarly, redundancy in communication paths can determine whether an incident alert reaches the command centre when it matters most.

For a highway operator, device availability is a safety metric.

The Role of the Command and Control Centre

An incident alert has little value if nobody is available to act on it.

The command and control centre is where automated detection becomes operational response.

Operators can monitor:

• Live camera feeds
• Incident alerts
• VMS status
• Communication-network health
• Field equipment
• Traffic conditions
• Emergency calls
• Enforcement events
• Patrol and response activities

An Integrated Command & Control Centre (ICCC) can extend this concept by bringing multiple systems and datasets into a broader operational environment.

For example, an ICCC can integrate ATMS with ANPR, WIM, CCTV, smart parking and other ITS systems to provide a centralized operational view.

The important point is that the command centre should be designed around operational workflows, not simply around a wall of screens.

What Should You Measure?

Installing technology is not the same as proving that it improves incident management.

A highway operator should establish measurable performance indicators.

Mean Time to Detect

Incident occurrence → system alert

This measures how quickly the system identifies an event.

Mean Time to Verify

System alert → operator confirmation

This measures how efficiently operators can validate the event.

Mean Time to Respond

Confirmed incident → first responder dispatched/on scene

This measures operational response.

Incident Clearance Time

Incident detection → affected lane or carriageway restored

This measures the overall effectiveness of incident management.

Detection Rate

Measure detection performance by event category against a manually verified sample.

False Alarm Rate

Track false alerts by camera, location and event type.

A system that generates too many false alarms can reduce operator trust.

Device Availability

Track uptime for:

• Cameras
• VMS
• Network links
• Field controllers
• Power systems
• Command-centre infrastructure

Secondary Incident Rate

This is one of the most important outcome measures.

The purpose of early detection and upstream warning is not merely to produce alerts.

It is to reduce the probability that the original incident creates another one.

ATMS and Highway Incident Management in India

Highway incident management is becoming increasingly important as intelligent transportation systems expand across India's National Highway network.

NHAI's updated ATMS standards were introduced specifically to incorporate newer technologies, AI-based detection, digital enforcement and a more comprehensive approach to road safety and incident response.

Government material also identifies ATMS deployments on high-traffic National Highways and National Expressways, with systems intended to support faster incident identification and response.

More recently, MoRTH has continued to describe ATMS as a road-safety tool incorporating AI-based VIDES, ANPR, PTZ and surveillance cameras for electronic monitoring, enforcement, early incident detection and real-time field response.

This is an important shift.

ATMS is no longer simply about displaying traffic information in a control room.

The direction is toward an integrated operational system that can detect, understand, communicate and support action in real time.

Why Integration Matters More Than Individual Devices

A highway does not become intelligent because it has more cameras.

The value comes from how the systems work together.

A camera without analytics provides footage.

Analytics without communication cannot deliver timely alerts.

Alerts without trained operators do not create a response.

A response without upstream warning may still result in a secondary collision.

That is why the architecture matters.

A complete highway incident management system connects:

Field Devices

↓

AI Video Analytics

↓

Communication Network

↓

Command & Control Centre

↓

Operator Verification

↓

Emergency / Enforcement Response

↓

VMS & Traveller Information

↓

Incident Clearance

This is where ATMS moves from surveillance infrastructure to active highway management.

Planning a Highway Incident Management or ATMS Deployment?

A successful deployment needs more than cameras and software.

It requires corridor-level planning, field infrastructure, communication networks, command-centre integration, analytics configuration, testing, commissioning and ongoing operations and maintenance.

GreenTech ITS provides integrated ATMS and video incident detection solutions covering design, engineering, supply, installation, commissioning and operations and maintenance.

The company's ATMS platform integrates traffic monitoring, VIDES, VMS, emergency communication, traffic data systems and command-centre capabilities, with communication options including GSM, wireless RF and OFC according to project requirements.

For organisations planning an advanced traffic management system, you can explore GreenTech ITS's ATMS solution and its integrated subsystems here: Advanced Traffic Management System

For urban and integrated traffic operations, see the Intelligent Traffic Management System.

For a broader explanation of how an Integrated Command & Control Centre supports traffic monitoring, see our related guide.

Frequently Asked Questions

What is a highway incident management system?

A highway incident management system is an integrated combination of video monitoring, AI-based incident detection, communications, command-centre operations, traveller information and field response used to detect, verify and manage incidents on highways. Its purpose is to reduce detection and response delays while helping prevent secondary incidents.

What is VIDES in ATMS?

VIDES stands for Video Incident Detection and Enforcement System. It is an AI-based subsystem within an ATMS that analyses video feeds to identify configured incidents and traffic violations and can support alerts, enforcement and e-challan integration. NHAI introduced VIDES as part of its updated ATMS Standards and Specifications 2023.

What is the difference between VIDS and VIDES?

VIDS generally refers to Video Incident Detection System and focuses on detecting abnormal traffic events. VIDES, or Video Incident Detection and Enforcement System, expands the role to include digital enforcement capabilities. NHAI's 2023 ATMS framework uses VIDES and includes provisions for enforcement and e-challan integration.

How does ATMS reduce highway emergency response time?

ATMS reduces response delays by connecting automated incident detection, command-centre verification, communication systems and field response. Instead of waiting for a road user or patrol vehicle to report an incident, AI-based video analytics can generate an alert for operator verification, allowing dispatch and traveller warnings to begin sooner.

Can VIDES detect wrong-way driving?

Yes. Wrong-direction driving is among the detection categories identified in NHAI's updated VIDES framework. When configured appropriately, video analytics can identify vehicles travelling in an abnormal direction and generate an alert for command-centre verification and response.

What incidents can a video incident detection system identify?

Depending on the system configuration, video incident detection can identify events such as accidents, stopped vehicles, congestion, wrong-way driving, pedestrians, animals, debris and other abnormal traffic conditions. VIDES can also support detection of configured traffic violations and digital enforcement.

Can ATMS generate e-challans?

ATMS can support automated e-challan workflows when the required VIDES, enforcement and API integrations are implemented. NHAI's 2023 ATMS specifications include provisions for API-based e-challan integration through VIDES.

What communication network does an ATMS use?

The communication architecture depends on the project. Optical fibre is commonly used where suitable infrastructure is available, while wireless RF and GSM/mobile connectivity can be used according to corridor conditions and project requirements. Redundancy and network availability should be considered for critical highway systems.

What is the role of VMS in highway incident management?

Variable Message Signs provide real-time information to approaching drivers. During an incident, VMS can communicate warnings about accidents, congestion, lane closures, diversions or other hazards, helping drivers adjust their behaviour before reaching the affected location.

What is the difference between ATMS and CCTV?

CCTV primarily provides video surveillance. ATMS integrates cameras and other field systems with analytics, communication networks, command-centre software and operational workflows. In other words, CCTV provides visibility, while ATMS uses connected technologies to support active traffic and incident management.

Why is false alarm rate important in video incident detection?

False alarms consume operator attention and can reduce confidence in the detection system. Analytics therefore need to be calibrated according to road conditions, camera positioning, traffic behaviour and the required detection categories. False alarm performance should be monitored continuously rather than treated as a one-time commissioning issue.

How do you measure highway incident management performance?

Useful metrics include Mean Time to Detect, Mean Time to Verify, Mean Time to Respond, incident clearance time, detection rate, false alarm rate, device availability and secondary incident rate. Together, these measurements show whether the system is improving both operational efficiency and highway safety.

Conclusion

A highway incident management system is ultimately about one thing: reducing the time between an incident occurring and an effective response.

ATMS provides the integrated operational framework.

VIDES provides automated video-based detection and enforcement capabilities.

The communication network moves information.

The command centre verifies and coordinates.

VMS warns approaching drivers.

Emergency and field teams act.

And the incident is recorded for review and improvement.

As the Trusted Highway & Toll Management Service Provider, our focus is on ensuring that all these components work together seamlessly.

The technology matters, but integration matters more.

A highway becomes safer not because one camera can see an accident, but because the entire system can detect it, understand it, communicate it and support a response before the situation becomes worse.