Table 9 Conclusion on the qualitative and quantitative comparisons of vehicle traffic flow and ship traffic flow.

From: Theoretical research and system design of ship navigation guidance for local temporary prohibited navigation area

Conclusion

Index

Sketch

Details

Discrepancy

1

Communication is Crucial for Safe Ship Navigation

Ship maneuverability and the ability to respond to navigational instructions are relatively weak during sailing. As a result, it is essential for ships to communicate in advance and determine navigation strategies when encountering one another. In contrast, vehicles do not require such communication for navigation

2

High Dispersion in Ship Traffic Flow for Safety

Due to the limited maneuverability of ships, they are often more widely dispersed within the traffic flow to maintain safety. This spatial dispersion ensures safer navigation. Therefore, when implementing ship navigation guidance, it is critical to maintain an appropriate distance between ships

3

Fewer Environmental Restrictions on Ship Traffic Flow

Ship traffic flow is less restricted by the operating environment compared to vehicle traffic. Except for areas covered by the ship routing system, ships can generally navigate freely as long as they meet the necessary navigation requirements. Consequently, it is important to account for the uncertainty in ship traffic flow when designing ship navigation guidance systems

Similarity

1

Both Ship and Vehicle Traffic Flows Form Complete Systems

Both ship and vehicle traffic flows exhibit the attributes of being systematic, having limitations (retardance), and being changeable (following behavior). When implementing ship traffic flow guidance, it is crucial to consider the system’s integrity and ensure that the guidance scheme aligns with the system’s overall development. The principles from vehicle traffic flow systems can be applied to the navigation guidance of ship traffic flow

2

Requiring Safety Considerations

Both vehicles and ships demonstrate following behavior within their respective traffic flows. However, the primary difference lies in the following distance. From a macro perspective, the two types of traffic flows share significant similarities. Therefore, by ensuring the safety of ship navigation, the methods used in vehicle traffic flow guidance can be adapted to guide ship traffic flow effectively