<title>Abstract</title> This paper analyzes urban multimodal transportation systems in an aggregated way. To describe the aggregate behavior of traffic in cities, use is made of an idea that is now receiving some attention: the macroscopic fundamental diagram (MFD). We demonstrate through simulation how the...

Baggage transfer is a critical factor in determining connecting schedules at hub airports. This paper examines the potential benefits of "ramp transfers"-bags that bypass the hub sorting facility because they have been presorted at their point of origin. It presents three idealized baggage...

Bus schedules cannot be easily maintained on busy lines with short headways: experience shows that buses offering this type of service usually arrive irregularly at their stops, often in bunches. Although transit agencies build slack into their schedules to alleviate this problem - if necessary...

Through the use of a profit-maximizing continuum approximation model, this paper systematically analyzes the development and structure of informal transit systems as a function of the network, user, and modal characteristics. This study examines the evening commute problem along a linear...

This paper studies the possible integration of long-haul operations by transportation mode and service level (defined by guaranteed delivery time) for package delivery carriers. Specifically, we consider the allocation of deferred items to excess capacity on alternative modes in ways that allow...

This book examines logistics systems in an integrated way. Its goal is to describe and show how to find rational structures for logistics systems considering all the relevant aspects. Building on an understanding of the simplest logistical system with only one origin and one destination, the...

This book summarizes a set of lectures given at U.C. Berkeley in the Fall of 2001, highlighting the connection between traffic flow, queuing systems and supply chains. The book unveils the root causes of the "bullwhip" effect; i.e., where the production of raw materials in a supply chain is seen...

This book examines logistics systems in an integrated way. Its goal is to describe and show how to find rational structures for logistics systems considering all the relevant aspects. Building on an understanding of the simplest logistical system with only one origin and one destination, the...

This book describes how to plan and design efficient logistics systems considering simultaneously all integral aspects of their operation, and how to evaluate economically existing or proposed systems. The approach, more physical than mathematical, requires little data