Highway Economic Requirements System State Version (HERS/ST) - a computer model that predicts the investment required to achieve certain highway system performance levels. HERS/ST uses engineering standards to identify highway deficiencies and applies economic criteria to select the most cost-effective mix of highway system improvements.
Influence of Transportation Infrastructure on Land Use - (PDF format 146 KB) This document describes the development decision-making process from the private sector perspective, as well as the role that local and regional government entities play in the process. It provides a framework for understanding the relative importance of transportation accessibility, describes the role of local and regional government actions and policies, and outlines the private developer's decision-making process.
National Highway Planning Network (NHPN) - A geospatial network database of major highways in the United States. It is used for highway performance analysis and planning at a regional and national scale.
Transportation Analysis Simulation System (TRANSIMS) - a set of transportation and air quality analysis and forecasting tools developed to create an integrated regional transportation system analysis environment.