USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Site Notification

Site Notification

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Public Roads - March/April 2000

Communication Product Updates

Communication Product Updates

by Compiled by Zac Ellis

Below are brief descriptions of the reports recently published by the Federal Highway Administration's (FHWA) Office of Research, Development, and Technology. All the publications are available from the National Technical Information Service (NTIS). In some cases, limited copies of the publication are available from the Research and Technology (R&T) Report Center.

Please Note: Contact NTIS for current pricing at or at Telephone: (703) 605-6000.

When ordering from NTIS, include the NTIS PB number (or publication number) and the publication title. You may also visit the NTIS Web site at to order publications online. For customers outside the United States, Canada, and Mexico, the cost is double the listed price. Address requests to:

National Technical Information Service

5285 Port Royal Road

Springfield, VA 22161

Telephone: (703) 605-6000

Requests for items available from the R&T Report Center should be addressed to:

Federal Highway Administration

RD&T Report Center, HRTS

9701 Philadelphia Court, Unit Q

Lanham, MD 20706

Telephone: (301) 577-0906

For more information on research and technology publications coming from FHWA, visit the Turner-Fairbank Highway Research Center's (TFHRC) Web site at, FHWA's Web site at, or the OneDOT information network at

Testing of State Roadside Systems, Volume I: Technical Report

Publication No. FHWA-RD-98-036

Testing of State Roadside Systems, Volume II: Appendix A--Crash Testing and Evaluation of a Michigan Thrie-Beam Transition Design

Publication No. FHWA-RD-98-037

Testing of State Roadside Systems, Volume III: Appendix B--Crash Testing and Evaluation of a Guardrail System for Low-Fill Culvert

Publication No. FHWA-RD-98-038

Testing of State Roadside Systems, Volume IV: Appendix C--Crash Testing and Evaluation of a Pennsylvania Transition Design

Publication No. FHWA-RD-98-039

Testing of State Roadside Systems, Volume XI: Appendix J--Crash Testing and Evaluation of Existing Guardrail Systems

Publication No. FHWA-RD-98-046

These studies were conducted to crash test and evaluate new or modified safety hardware and, where necessary, redesign the devices to improve their impact performance.

The three major areas addressed in this study are the impact performance of bridge railings, transitions from guardrails to bridge railings, and end treatments for guardrails and median barriers.

The NTIS numbers and costs for these publications are as follows:

  • Volume I, PB99-155079; $60 for a paper copy or $23 for the report on microfiche.
  • Volume II, PB99-155087; $25.50 for a paper copy or $12 for the report on microfiche.
  • Volume III, PB99-155095; $29.50 for a paper copy or $12 for the report on microfiche.
  • Volume IV, PB99-155103; $25.50 for a paper copy or $12 for the report on microfiche.
  • Volume XI, PB99-155111; $47 for a paper copy or $23 for the report on microfiche.

Guidebook on Methods to Estimate Non-Motorized Travel: Overview of Methods

Guidebook on Methods to Estimate Non-Motorized Travel: Supporting Documentation

Publication Nos. FHWA-RD-98-165 and FHWA-RD-98-166

This guidebook provides a means for practitioners to better understand and estimate bicycle and pedestrian travel and to address transportation planning needs. The guidebook describes and compares the various methods that can be used to forecast the demand of non-motorized travel and supports the prioritization analyses of non-motorized projects. These methods are categorized according to four major purposes: (1) demand estimation, (2) relative demand potential, (3) support quality analysis, and (4) supporting tools and techniques. Discrete choice models, regional travel models, sketch plan methods, facility demand potential, bicycle compatibility measures, and geographic information systems are among the methods and tools described.

The NTIS number for the Overview of Methods is PB99-166175; the cost is $27 for a paper copy or $12 for the report on microfiche. The NTIS number for the Supporting Documentation is PB99-166183; the cost is $44 for a paper copy or $17 for the report on microfiche.

Calcium Magnesium Acetate at a Lower Production Cost: Production of CMA Deicer From Cheese Whey

Publication No. FHWA-RD-98-174

Calcium magnesium acetate (CMA), a mixture of calcium acetate and magnesium acetate, is used as an environmentally benign roadway deicer. The present commercial CMA deicer made from glacial acetic acid and dolomitic lime or limestone is expensive compared to salt and other deicers. The goal of this project was to develop low-cost acetate deicers from cheap feedstocks, such as biomass and industrial wastes, via fermentation. Two alternative methods to produce low-cost acetate deicers from cheese whey were studied. CMA deicers produced from cheese whey by fermentation and extraction were tested for their acetate content and deicing properties.

The NTIS number is PB99-148991; the cost is $36 for a paper copy or $17 for the report on microfiche.

Pipe Interaction With the Backfill Envelope

Publication No. FHWA-RD-98-191

This report summarizes a study of installation practices for buried (culvert) pipes. Current practice was reviewed through a literature search and a survey of users, manufacturers, and others involved in the use of buried pipes. Typical backfill materials were characterized through standard and variable effort compaction tests, CBR tests, penetration tests, and one-dimensional compression tests. Standard classification systems were compared and standard groups of backfill materials were evaluated. The soil properties that were used to develop the American Association of State Highway and Transportation Officials' SIDD designs are proposed for use as standard properties for application to the installation of all types of pipes.

The NTIS number is PB99-153603; the cost is $56 for a paper copy or $23 for the report on microfiche.

Evaluation of Emergency Vehicle Signal Preemption on the Route 7 Virginia Corridor

Publication No. FHWA-RD-99-070

This study analyzed the impact of emergency vehicle traffic signal preemption across three coordinated intersections on Route 7 (Leesburg Pike near Landsdowne) in Virginia. FHWA's Traffic Software Integrated System package, which includes the CORSIM simulation model and the vehicle animator, TRAFVU, was used for this study. Using FHWA's Traffic Research Laboratory as a test bed, ITT Systems utilized the Controller Interface Device to interface a modified version of the CORSIM simulation with Type 170 controllers programmed with the identical signal plans to those existing at the Route 7 intersections, with minor modifications to allow signal preemption.

The NTIS number is PB99-157950; the cost is $25.50 for a paper copy or $12 for the report on microfiche.

Preliminary Evaluation of LTPP Continuously Reinforced Concrete (CRC) Pavement Test Sections

Publication No. FHWA-RD-99-086

As part of the study, analysis of data from the Long Term Pavement Performance (LTPP) GPS-5 test section was conducted to identify factors that influence long-term crack spacing in CRC pavements and determine the effects of crack spacing on pavement performance. Data from the 85 test sections from the GPS-5 experiment were analyzed.

The NTIS number is PB99-162778; the cost is $27 for a paper copy or $12 for the report on microfiche.

Remote Methods of Underwater Inspection of Bridge Structures

Publication No. FHWA-RD-99-100

A portable trailer-mounted bridge scour inspector was developed and tested under flood conditions for inspecting bridge scour in the vicinity of piers from bridge decks. The bridge scour inspector features a remotely controlled arm to deploy a sonar probe in the water from a vehicle located on the bridge deck. The bridge scour inspector was field tested under low water conditions in Texas and was field tested under extreme flood conditions in Georgia during the 1994 Tropical Storm Alberta flooding. A more sophisticated remotely controlled work station was designed conceptually and is described in the report, but was not fabricated for testing. This system could be used above and below the water surface to inspect and repair bridges.

The NTIS number is PB99-157968; the cost is $33 for a paper copy or $17 for the report on microfiche.

Analysis of Time-Domain Reflectometry Data From LTPP Seasonal Monitoring Program Test Sections -- Final Report

Publication No. FHWA-RD-99-115

Time domain reflectometry (TDR) has become one of the most reliable methods for measuring in situ soil moisture content. TDR sensors developed by FHWA are being used in the LTPP Seasonal Monitoring Program to monitor the in situ moisture content at selected LTPP sites. The main goal of the study reported here was to develop procedures to produce good estimates of in situ gravimetric moisture content. All the TDR traces in the LTPP database were processed using the approach described in this report.

The NTIS number is PB99-146607; the cost is $47 for a paper copy or $23 for the report on microfiche.