Chapter 13 Transportation in a Supply Chain

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Presentation transcript:

Chapter 13 Transportation in a Supply Chain

Outline The role of transportation in the supply chain Factors affecting transportation decisions Modes of transportation and their performance characteristics Transportation infrastructure and policies Design options for a transportation network Trade-offs in transportation design Tailored transportation The role of IT in transportation Risk management in transportation Making transportation decisions in practice Notes:

Factors Affecting Transportation Decisions Carrier (party that moves or transports the product) Vehicle-related cost Fixed operating cost Trip-related cost Shipper (party that requires the movement of the product between two points in the supply chain) Transportation cost Inventory cost Facility cost

Transportation Modes Trucks Rail Air Package Carriers Water Pipeline TL LTL Rail Air Package Carriers Water Pipeline Notes:

Truckload (TL) Average revenue per ton mile (1996) = 9.13 cents Average haul = 274 miles Average Capacity = 42,000 - 50,000 lb. Low fixed and variable costs Major Issues Utilization Consistent service Backhauls Notes:

Less Than Truckload (LTL) Average revenue per ton-mile (1996) = 25.08 cents Average haul = 646 miles Higher fixed costs (terminals) and low variable costs Major issues: Location of consolidation facilities Utilization Vehicle routing Customer service Notes:

Rail Average revenue / ton-mile (1996) = 2.5 cents Average haul = 720 miles Average load = 80 tons Key issues: Scheduling to minimize delays / improve service Off-track delays (at pickup and delivery end) Yard operations Variability of delivery times Notes:

Air Key issues: Location/number of hubs Location of fleet bases/crew bases Schedule optimization Fleet assignment Crew scheduling Yield management Notes:

Package Carriers Companies like FedEx, UPS, USPS, that carry small packages ranging from letters to shipments of about 150 pounds Expensive Rapid and reliable delivery Small and time-sensitive shipments Preferred mode for e-businesses (e.g., Amazon, Dell, McMaster-Carr) Consolidation of shipments (especially important for package carriers that use air as a primary method of transport)

Water Limited to certain geographic areas Ocean, inland waterway system, coastal waters Very large loads at very low cost Slowest Dominant in global trade (autos, grain, apparel, etc.)

Pipeline High fixed cost Primarily for crude petroleum, refined petroleum products, natural gas Best for large and predictable demand Would be used for getting crude oil to a port or refinery, but not for getting refined gasoline to a gasoline station (why?)

Intermodal Use of more than one mode of transportation to move a shipment to its destination Most common example: rail/truck Also water/rail/truck or water/truck Grown considerably with increased use of containers Increased global trade has also increased use of intermodal transportation More convenient for shippers (one entity provides the complete service) Key issue involves the exchange of information to facilitate transfer between different transport modes

Design Options for a Transportation Network What are the transportation options? Which one to select? On what basis? Direct shipping network Direct shipping with milk runs All shipments via central DC Shipping via DC using milk runs Tailored network Notes:

Trade-offs in Transportation Design Transportation and inventory cost trade-off Choice of transportation mode Inventory aggregation Transportation cost and responsiveness trade-off

Choice of Transportation Mode A manager must account for inventory costs when selecting a mode of transportation A mode with higher transportation costs can be justified if it results in significantly lower inventories

Inventory Aggregation: Inventory vs. Transportation Cost As a result of physical aggregation Inventory costs decrease Inbound transportation cost decreases Outbound transportation cost increases Inventory aggregation decreases supply chain costs if the product has a high value to weight ratio, high demand uncertainty, or customer orders are large Inventory aggregation may increase supply chain costs if the product has a low value to weight ratio, low demand uncertainty, or customer orders are small

Trade-offs Between Transportation Cost and Customer Responsiveness Temporal aggregation is the process of combining orders across time Temporal aggregation reduces transportation cost because it results in larger shipments and reduces variation in shipment sizes However, temporal aggregation reduces customer responsiveness

Tailored Transportation The use of different transportation networks and modes based on customer and product characteristics Factors affecting tailoring: Customer distance and density Customer size Product demand and value

Role of IT in Transportation The complexity of transportation decisions demands use of IT systems IT software can assist in: Identification of optimal routes by minimizing costs subject to delivery constraints Optimal fleet utilization GPS applications

Risk Management in Transportation Three main risks to be considered in transportation are: Risk that the shipment is delayed Risk of disruptions Risk of hazardous material Risk mitigation strategies: Decrease the probability of disruptions Alternative routings In case of hazardous materials the use of modified containers, low-risk transportation models, modification of physical and chemical properties can prove to be effective

Making Transportation Decisions in Practice Align transportation strategy with competitive strategy Consider both in-house and outsourced transportation Design a transportation network that can handle e-commerce Use technology to improve transportation performance Design flexibility into the transportation network

INDIAN ROAD TRANSPORT Nature of fleet ownership and scale of operations Impact of poor infrastructure on sector performance Physical, organisational, infrastructural, regulatory and human resource constraints Dominance of road transport as preferred mode of freight transportation Features of Indian Road Transport Sector OM Logistics-Succeeding against Odds

Summary of Learning Objectives What is the role of transportation in a supply chain? What are the strengths and weaknesses of different modes of transportation? What is role of infrastructure and policies in transportation? What are the different network design options and what are their strengths and weaknesses? What are the trade-offs in transportation network design?