SSA Marine – AI-Driven RTG Proximity Detection System
The challenge
In container terminals, one of the most critical safety risks is the potential for collisions between Rubber-Tyred Gantry (RTG) cranes and ground personnel. Despite existing safety measures like wheel guards, incidents involving RTGs and pedestrians continue to occur - particularly during container inspections or equipment checks. These high-risk interactions can result in serious injury or fatalities, highlighting the urgent need for a more effective solution.
The innovation
SSA Marine, in partnership with Strata, has developed an AI-powered RTG proximity detection system designed to prevent plant-versus-pedestrian incidents. The system includes:
- Four AI-enabled cameras mounted on each RTG leg
- Infrared and conventional imaging for 24/7 visibility in all weather conditions
- Three-zone detection system (green, yellow, red) with escalating automated responses
- Real-time alerts via a screen in the operator’s cab
- Fail-safe halt function when a pedestrian or vehicle enters the red zone
- Audible alarms and flashing strobes to alert both operators and ground personnel
This system allows RTG operators to maintain full awareness of their surroundings and automatically stops the machine when a person or vehicle enters a critical danger zone.
How it works
The system was piloted on an RTG at SSA’s Long Beach terminal. The implementation followed a three-phase approach:
- Installation and integration of the Strata camera system
- Data collection and learning, allowing the AI to fine-tune detection accuracy
- Full deployment, with adjustments to reduce false positives and improve reliability
The cameras feed live data to the operator’s cab, while the system autonomously manages alerts and machine responses based on proximity.
Case study
The introduction of the system led to an immediate shift in safety culture. Workers became more aware of their proximity to RTGs, resulting in fewer zone breaches and a noticeable drop in near-miss incidents. The system’s effectiveness has prompted SSA Marine to explore its use on other equipment, including forklifts, across Southern California terminals.
Potential impact
This AI-driven proximity system represents a major advancement in terminal safety by:
- Preventing fatal collisions between RTGs and ground personnel
- Reducing near-miss incidents and improving situational awareness
- Enhancing operator confidence and control
- Setting a new standard for automated safety in port operations
- Date
- 22/07/2025
