@article{ref1,
title="A planning model for multiple‐mode transportation system operations",
journal="Transportation planning and technology",
year="1976",
author="Nihan, Nancy L. and Morlok, Edward K.",
volume="3",
number="2",
pages="59-73",
abstract="The problem of generating a set of ?good? transportation alternatives during the early and intermediate stages of transportation planning is addressed in this paper. A linear programming model of a multi?modal transportation system is developed. The model is run interactively to determine optimal operating levels for all modes for various transport policy decisions. The model described is a component of a composite network generation model incorporating dynamic changes. The linear programming component determines optimal operating policies for given points in time. The composite model incorporates these in a dynamic programming framework to determine optimal staged investment policies over several time periods.<p />",
language="en",
issn="0308-1060",
doi="10.1080/03081067608717093",
url="http://dx.doi.org/10.1080/03081067608717093"
}