Supply Chain Management

⛓️Supply Chain Management Unit 9 – Transportation & Distribution in SCM

Transportation and distribution are vital components of supply chain management, ensuring products reach customers efficiently. This unit covers key concepts, transportation modes, network design, and optimization strategies that enable businesses to move goods effectively. Technology plays a crucial role in modern transportation and distribution, from management systems to tracking devices. The unit also explores cost management, performance metrics, and future trends, preparing students for the evolving landscape of logistics and supply chain operations.

Key Concepts in Transportation & Distribution

  • Transportation involves the movement of goods from one location to another, while distribution encompasses the entire process of delivering products to end customers
  • The goal of transportation and distribution is to ensure the right products reach the right customers at the right time and in the right condition
  • Factors influencing transportation and distribution decisions include cost, speed, reliability, flexibility, and environmental impact
  • Intermodal transportation combines multiple modes of transport (truck, rail, ship, air) to optimize efficiency and cost-effectiveness
  • Reverse logistics manages the return, repair, or disposal of products, ensuring sustainable and efficient supply chain operations
  • Cross-docking is a distribution strategy that minimizes handling and storage by transferring goods directly from inbound to outbound vehicles
  • Collaborative transportation management (CTM) involves shippers, carriers, and customers working together to optimize transportation processes and reduce costs

Modes of Transportation

  • Trucking is the most common mode for short to medium-distance transportation, offering flexibility and door-to-door service
    • Full truckload (FTL) shipments utilize the entire capacity of a truck, while less-than-truckload (LTL) consolidates multiple shipments
    • Trucking is subject to regulations such as hours of service (HOS) limits and weight restrictions
  • Rail transportation is cost-effective for long-distance and high-volume shipments, particularly for bulk commodities (coal, grain)
  • Maritime shipping is essential for global trade, with containerization revolutionizing the industry by standardizing cargo units
    • Ports serve as critical nodes in the supply chain, facilitating the loading, unloading, and transshipment of goods
  • Air freight offers the fastest transportation option but is more expensive and subject to stricter security measures
  • Pipeline transportation is used for the continuous movement of liquid or gaseous products (oil, natural gas)
  • Intermodal transportation combines multiple modes to leverage their respective strengths and optimize overall performance

Distribution Network Design

  • Distribution network design involves determining the optimal number, location, and capacity of facilities (warehouses, distribution centers) to meet customer demand
  • Centralized distribution networks consolidate inventory in fewer locations, reducing costs but potentially increasing response times
    • Centralization is suitable for products with stable demand and low inventory turnover
  • Decentralized networks position inventory closer to customers, improving responsiveness but increasing inventory and facility costs
    • Decentralization is appropriate for products with high demand variability and short lead time requirements
  • Factors influencing network design include customer service requirements, product characteristics, transportation costs, and facility costs
  • Network optimization models (gravity models, center of gravity) help determine the optimal facility locations based on supply and demand data
  • Risk management considerations, such as natural disasters or supply chain disruptions, should be incorporated into network design decisions
  • Regularly reviewing and adjusting the distribution network is essential to adapt to changing market conditions and customer needs

Transportation Planning and Optimization

  • Transportation planning involves determining the most efficient routes, modes, and schedules for moving goods through the supply chain
  • Factors considered in transportation planning include cost, transit time, reliability, and environmental impact
  • Vehicle routing problems (VRP) aim to minimize total distance traveled or time spent while satisfying customer demands
    • Variants of VRP include capacitated VRP (CVRP), which considers vehicle capacity constraints, and time-dependent VRP (TDVRP), which accounts for varying travel times
  • Load planning optimizes the placement of goods within a vehicle to maximize space utilization and minimize damage risk
  • Carrier selection involves choosing the most suitable transportation providers based on factors such as cost, service level, and reliability
  • Transportation management systems (TMS) automate and optimize planning, execution, and tracking of shipments
  • Collaborative transportation planning involves sharing information and resources among supply chain partners to improve overall efficiency

Warehousing and Inventory Management

  • Warehousing involves the storage and handling of goods between production and consumption points
  • Warehouse management systems (WMS) automate and optimize processes such as receiving, putaway, picking, and shipping
    • WMS can integrate with other systems (ERP, TMS) to provide end-to-end visibility and control
  • Inventory management aims to balance the costs of holding inventory with the benefits of meeting customer demand
    • Safety stock is extra inventory held to buffer against demand or supply variability
    • Economic order quantity (EOQ) models determine the optimal order size that minimizes total inventory holding and ordering costs
  • Cross-docking is a warehousing strategy that minimizes handling and storage by transferring goods directly from inbound to outbound vehicles
  • Value-added services, such as kitting, labeling, and customization, can be performed in warehouses to meet specific customer requirements
  • Warehouse layout and design should optimize space utilization, minimize travel distances, and ensure efficient material flow
  • Inventory accuracy and cycle counting are critical for maintaining reliable stock levels and avoiding stockouts or overstocking

Technology in Transportation & Distribution

  • Transportation management systems (TMS) automate and optimize planning, execution, and tracking of shipments
    • TMS can integrate with other systems (ERP, WMS) to provide end-to-end visibility and control
  • Global positioning systems (GPS) enable real-time tracking of vehicles and shipments, improving visibility and security
  • Radio-frequency identification (RFID) tags and barcodes facilitate automated data capture and tracking of goods throughout the supply chain
  • Internet of Things (IoT) devices, such as sensors and smart containers, provide real-time monitoring of cargo condition and location
  • Blockchain technology can enhance supply chain transparency, traceability, and security by creating an immutable record of transactions
  • Artificial intelligence (AI) and machine learning (ML) can optimize route planning, demand forecasting, and risk management
  • Autonomous vehicles, including self-driving trucks and drones, have the potential to revolutionize transportation by improving efficiency and safety

Cost Management and Performance Metrics

  • Transportation costs include direct costs (fuel, labor, equipment) and indirect costs (administration, insurance)
    • Fuel surcharges and accessorial charges (detention, layover) can significantly impact total transportation costs
  • Inventory carrying costs include the opportunity cost of capital, storage costs, and risk costs (obsolescence, damage)
  • Total logistics cost (TLC) encompasses all costs associated with transportation, warehousing, and inventory management
  • Key performance indicators (KPIs) measure and monitor the effectiveness and efficiency of transportation and distribution operations
    • On-time delivery (OTD) measures the percentage of shipments delivered within the agreed-upon timeframe
    • Freight cost per unit measures the average transportation cost per unit of product shipped
    • Inventory turnover ratio measures how quickly inventory is sold and replaced, indicating the efficiency of inventory management
  • Benchmarking involves comparing performance against industry standards or best-in-class companies to identify improvement opportunities
  • Activity-based costing (ABC) assigns costs to specific activities, providing a more accurate understanding of cost drivers and profitability
  • Capacity constraints, particularly in trucking, can lead to higher costs and longer lead times during peak seasons
  • Driver shortages and high turnover rates in the trucking industry can disrupt transportation operations and increase costs
  • Fuel price volatility can significantly impact transportation costs and require effective fuel management strategies
  • Increasing customer expectations for faster delivery times and greater visibility put pressure on transportation and distribution operations
  • Sustainability concerns, such as reducing carbon emissions and waste, are driving the adoption of green logistics practices
    • Initiatives include alternative fuel vehicles, optimized routing, and sustainable packaging materials
  • Globalization and the growth of e-commerce are expanding supply chain networks and increasing the complexity of transportation and distribution
  • Digitalization and the integration of emerging technologies (AI, IoT, blockchain) are transforming transportation and distribution processes
  • Collaborative logistics, such as shared warehousing and transportation, can help companies optimize resources and reduce costs
  • Resilience and risk management are becoming increasingly important in the face of supply chain disruptions (natural disasters, pandemics)


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© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.