Simple Explanation (ELI5)

Think of a port as a giant kitchen: tractors are chefs moving huge pots (containers). Old ones smell like gasoline; new electric ones are like chefs on e-bikes: clean and quiet, but if the battery dies... dinner is late!

Key Advantages & Current Limits

🟢 Pros: Up to 40% less CO2 emitted, cleaner air for workers and nearby residents. 🟢 Pros: Reduced noise pollution, improving working conditions at terminals. 🔴 Cons: Automatic models (e-AGT) slow down operations and risk stalling for recharging. 🔴 Cons: Requires complex planning (fleet size, chargers, routes) to avoid terminal gridlock.

Future Outlook & Takeaways

In the next 3-5 years we will see 'hybrid' ports where electric and automated tractors coexist, managed by software optimizing charging and routing in real-time. This will make ship unloading more predictable and green, cutting local pollution-related health costs.

Electric tractors: how clean is a door in the port?

Article

100%

Ports are places where thousands of ships arrive and depart each year. But do you know how goods are loaded and unloaded? With large machines called tractors! Today, however, ports want to be more eco-friendly. A team of researchers simulated what happens if old combustion tractors are replaced with electric or even automatic models. They tested three types: traditional ones (that run on fuel), battery-powered electric ones, and electric ones that drive themselves! The test was conducted in the port of Ravenna, simulating a ship arriving and needing to be loaded and unloaded all in one day. The results? Electric tractors emit up to 40% less CO2. But the automatic models have a problem: it takes more time to load and unload, and they sometimes get stuck due to lack of energy. This means more planning is needed to manage charging and the exact number of machines. In short, switching to electric tractors is a great idea to save the planet, but it requires organization!

Bonus

100%

The study uses a simulation-based framework to assess the operational and environmental impact of transitioning from internal combustion engine (ICE) tractors to battery electric tractors (BET) and automated electric guided tractors (e-AGT) in Ro-Ro terminal operations. The model was applied to the Ro-Ro terminal of the Port of Ravenna, simulating a complete cycle of mooring and cargo handling. Key performance indicators (KPIs) were defined to evaluate turnaround time, vehicle productivity, energy consumption, and CO2 emissions. The results show that both BET and e-AGT configurations significantly reduce emissions compared to ICE, with reductions up to 40%. However, the e-AGT scenario reveals operational drawbacks, including increased unloading time and reduced fleet availability due to charging constraints and routing limitations. These findings highlight the environmental potential of automation and electrification but also emphasize the need for integrated planning of fleet size, charging infrastructure, and circulation specifications. The proposed framework provides a replicable decision-support tool for port authorities and logistics operators to evaluate alternative handling technologies under realistic conditions.