A16 Real-time disruption management Flashcards
What is intermodal freight transportation, and why is it important?
Intermodal freight transportation involves using multiple transportation modes (e.g., rail, road, inland waterways) in a single supply chain to improve efficiency and reduce environmental impact.
What is the main challenge in intermodal transportation?
Managing disruptions, such as delays, infrastructure issues, and unexpected events, which reduce reliability and increase complexity.
What is the proposed real-time disruption management approach?
The approach combines offline planning (pre-scheduled routes) with online re-planning based on real-time data, using a hybrid simulation-optimization model to quickly react to unexpected events.
Why is real-time disruption management crucial in intermodal freight transport?
Because unexpected events like congestion, weather issues, or accidents can delay shipments, and quick adjustments ensure cost efficiency, timeliness, and supply chain resilience.
What are the key components of the proposed Decision Support System (DSS)?
Offline Planning – Creates initial transportation plans based on cost, time, and emissions.
Monitoring & Execution – Tracks real-time transport status.
Disruption Detection – Identifies unexpected events affecting routes.
Online Re-planning – Quickly finds optimal alternative routes when disruptions occur.
What are the three re-planning policies used for disruption management?
Waiting Policy – The vehicle waits until the disruption clears.
Transshipment Policy – The cargo is transferred to an alternative transport mode at the next available node.
Detour Policy – The vehicle takes an alternative route to bypass the affected area.
When is the waiting policy the best option?
When the disruption is short (e.g., less than 2 hours), and waiting causes less cost or delay than re-routing.
How does the detour policy work, and when is it used?
The system finds an alternative route to avoid the disrupted area.
It is best used when the delay is long, and a detour saves more time than waiting.
What factors affect the effectiveness of the detour policy?
Proximity to disruption – If the vehicle is too close, a detour might not be feasible.
Network density – More available alternative routes make detouring easier.
Transportation mode – Some modes (e.g., rail, waterway) have fewer detour options than road transport.
How does the transshipment policy improve disruption management?
By switching cargo to another transport mode, it reduces reliance on a single mode and helps avoid bottlenecks.
How does real-time monitoring help with disruption management?
It continuously tracks transport conditions, allowing the system to quickly detect issues and recommend optimal solutions.
What are the main benefits of the proposed disruption management system?
Faster response to unexpected events
Improved transport reliability and efficiency
Reduced costs and emissions
Better supply chain resilience
How does hybrid simulation-optimization improve decision-making in transport planning?
It combines pre-planned optimization with real-time scenario adjustments, ensuring that disruptions are managed quickly and effectively.
Why is intermodal transportation underutilized, despite its benefits?
Coordination challenges between multiple transport providers.
Lack of real-time disruption management systems.
Infrastructure limitations in certain regions.
What are some real-world applications of disruption management in freight transport?
Logistics companies use AI-driven decision support systems (DSS) to monitor and adjust shipment routes dynamically, reducing delays and costs.
