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Federal Highway Administration > Publications > Vol. 58· No. 1

Summer 1994
Vol. 58· No. 1

Articles

Featuring developments in federal highway policies, programs and research technology

The Automated Highway System: An Idea Whose Time Has Come

by Nita Congress

The demand on our overburdened highway system is increasing every day. Traffic is snarled, drivers are snarling. What should be a routine 20-minute trip can take hours, as traffic congestion multiplies the effects of individual variations in driving performance "as determined by physical abilities, knowledge, experience and, indeed, personality."

The IVHS Architecture Program: A Systematic Approach to Progress

The Intelligent Vehicle Highway System (IVHS) is a large umbrella program that consists of a number of different user services in the categories of travel and traffic management, public transportation management, electronic payment, commercial vehicle operations, emergency management, and advanced vehicle safety systems.

Safety on the Washington, D.C., Capital Beltway

by Ilona Orban

Public safety is central to the mission of transportation officials in the Washington metropolitan area. However, safety challenges on the Washington Capital Beltway--the 63-mile highway that rings the nation's capital--are compounded by the fact that improvements require the attention and coordination of two states, the District of Columbia, and nearly 20 counties and cities as well as the federal government. This article presents the regional, coordinated efforts that are underway to improve safety on the Beltway.

Highway Finance: Past, Present, and Future

by Germaine Williams and Tom Howard

The current finance structure for highways is not producing the funds needed to meet the country's requirements for highway investment. Evidence for this is found by comparing recent trends in highway finance and the annual investment required to maintain the current level of highway system performance.

Transferring Technology From Conservation Science to Infrastructure Renewal

by Richard A. Livingston

In the context of highway research, technology transfer usually refers to the adaptation of software or hardware from the aerospace or defense fields to problems of highway construction and maintenance.

The Northridge Earthquake: Progress Made, Lessons Learned in Seismic-Resistant Bridge Design

by James D. Cooper, Ian M. Friedland, Ian G. Buckle, Roland B. Nimis, and Nancy McMullen Bobb

Our society--our way of life--depends on a complex network of infrastructure systems. These systems are lifelines that provide transportation and communication services, a supply of energy and fresh water, and the disposal of wastewater and waste products. Among the oldest of these lifelines are our transportation systems--highways, railroads, mass transit, ports, waterways, and airports.

The Interactive Highway Safety Design Model: Designing for Safety by Analyzing Road Geometrics

by Jerry A. Reagan

The late 1980s saw a renewed interest in safety and geometric design in the United States. The Transportation Research Board (TRB) Committees on Geometric Design and the Operational Effects of Geometric Design launched a five-year series of sessions, beginning in 1988, on the state of the practice of five geometric design topics: sight distance, interchanges, intersections, alignment, and cross sections.

Accident Rates Using HSIS

by Yusuf M. Mohamedshah and Amy R. Kohls

One of the major tasks of the Federal Highway Administration's (FHWA) Design Concepts Research Division is to develop and implement an Interactive Highway Safety Design Model (IHSDM).

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