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.
All Federal Highway Administration (FHWA) information technology systems will be unavailable, Friday, October 28, at 10:00 p.m. to Sunday, October 30, at 11:59 p.m., EDT, while work is being performed on the network. During that time, users will not be able to access any FHWA systems.