VLM output
An elevated CCTV camera overlooks a multi-lane divided highway in daylight, with heavy, densely packed but still-moving traffic in the near carriageway (including a heavy truck in the leftmost lane) and much lighter traffic in the opposite carriageway. Across the four frames vehicles advance steadily along both directions with no stoppage, collision, or lane obstruction; an overhead gantry and green directional sign are visible ahead.
- Traffic DensityHeavy
- Congestion LevelModerate
- Traffic FlowMoving
- Stopped Vehicle DetectedNo
- Accident Or IncidentNo
- Heavy Vehicles PresentYes
- Shoulder Or Lane ObstructionNo
- Pedestrian On RoadwayNo
- Visibility ConditionsClear Daylight
Customer challenges
Hundreds of feeds, too few eyes; an event may show on one camera for seconds
Legacy IID detects objects, not situations: no severity, cause or handling status
Cameras are isolated; location, direction and surroundings are judged by hand
Slow vehicles, uncovered loads and dangerous goods in view are not recognised before they cause harm
Fog visibility, crosswind and flood depth cannot be read from video today
Event timelines, evidence and reports are compiled manually; footage is not searchable
Customer benefits
Reduced dependence on manual monitoring of large CCTV estates; the whole line covered round the clock
Shorter time from event to detection; tunnel slow-vehicle alerts lift overall throughput
From object recognition to event and situation understanding: not just that traffic is jammed but why
Managers grasp events without switching cameras one by one; site integration and scenario build-out in 30 days
Far less time compiling, searching and reporting events
Previously unsearchable footage becomes searchable, analysable road-event data
An AI perception base for future intelligent, automated road management
Key features
Slow Vehicle Detection
Detects slow-moving vehicles on the highway.
Unsecured Truck Load Detection (Uncovered Gravel Trucks)
Detects unsecured truck loads such as uncovered gravel trucks.
Specialized Vehicle Detection (Dangerous Goods)
Detects specialized vehicles carrying dangerous goods.
Adverse-Weather Trajectory Anomaly Detection
Detects abnormal vehicle trajectories in adverse weather.
Abnormal Congestion Point Detection
Detects abnormal congestion points along the corridor.
High-Risk Segment Driving Behavior (Weaving, Frequent Lane Change)
Detects risky driving behavior such as weaving and frequent lane changes in high-risk segments.
Incident Handling Status Tracking (Rescue Arrival to Reopening)
Tracks incident handling status from rescue arrival to reopening.
Road Hazard Detection (Open-Set Debris, Stalled Vehicles)
Detects road hazards including open-set debris and stalled vehicles.
Wrong-Way Driving & Emergency Vehicle Yield Detection
Detects wrong-way driving and failure to yield to emergency vehicles.
Fog Visibility Grading & Crosswind Anomaly Detection
Grades fog visibility and detects crosswind anomalies.
Flooding & Water Depth Grading
Detects flooding and grades water depth.
Work-Zone Traffic Control Compliance Check
Checks work-zone traffic control compliance.
VLM Road Event Understanding
Uses a vision language model to interpret road events.
Multi-Camera Event Monitoring
Monitors events across multiple cameras.
Natural Language Event Description
Describes events in natural language.
Road Digital Twin
Provides a digital twin of the road corridor.
Event Visualization
Visualizes events on the road view.
AI Agent Assistant
Provides an AI agent assistant for operators.
Incident Summary & Reporting
Summarizes incidents and generates reports.
Historical Event Search
Searches historical events.
Before & after
| Before | After — with Linker AI Nexa |
|---|---|
| Before Operators scan feeds in rotation; only a small share watched at any moment | After — with Linker AI Nexa 100% of integrated streams under continuous AI watch, 24/7 |
| Before Events surface only when someone reports them | After — with Linker AI Nexa Around 4–5 auto-detected events per stream per day across 7 event types |
| Before Slow vehicles in tunnels unnoticed until queues form | After — with Linker AI Nexa Overall tunnel throughput +6% |
| Before Anomalies known when reported | After — with Linker AI Nexa Awareness 8 minutes earlier, mitigation time -20% |
| Before Uncovered loads sampled by roadside checks, under 1% of trucks | After — with Linker AI Nexa 100% of passing vehicles screened with violation confidence scored |
| Before Each event compiled and reported by hand | After — with Linker AI Nexa Time per event report -70%, historical event search in seconds |