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RECENT
PUBLICATIONS
Compiled by
Zac Ellis
Researchers, academicians,
and managers alike should find this department useful. Whether you're
looking for information on cathodic protection of bridges, human factors
guidelines for automated highway systems, or minimum retroreflectivity
requirements for traffic signs, this may be the place for you.
Chances are that these
brief descriptions of reports recently published by the Federal Highway
Administration's (FHWA) Office of Research, Development, and Technology,
may fit your needs. All the publications are available from the National
Technical Information Service (NTIS). In some cases, limited copies of
the publications are available from the Research and Technology (R&T)
Report Center.
Please Note: Contact NTIS for current pricing at www.ntis.gov 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
www.ntis.gov 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
R&T Product Distribution Center, HRTM-03
E-mail: report.center@dot.gov
1995 Honda Accord
LX Broadside Collision With a Narrow Fixed Object: FOIL Test Number 98S007
Publication No. FHWA-RD-99-024
This report describes
the test procedures, setup, and results from the last of three broadside
crash tests conducted at FHWA's Federal Outdoor Impact Laboratory (FOIL)
located at the Turner-Fairbank Highway Research Center (TFHRC) in McLean,
Va. The National Highway Traffic Safety Administration (NHTSA) enlisted
FHWA to aid in developing laboratory test procedures to be used in an
amended version of Federal Motor Vehicle Safety Standard (FMVSS) 201.
Four previous crash tests with a Honda Accord LX and the FOIL 300K instrumented
rigid pole (test numbers 97S003, 97S004, 97S005, and 97S006) produced
a test methodology for conducting broadside vehicle crash tests of dynamic
side-impact head protection systems (e.g., air bags).
Once the test procedures were established, these three additional broadside
crash tests were conducted to demonstrate the practicality and feasibility
of the new test procedures. The three vehicles used for these tests were
a 1994 Ford Explorer XLT, a 1994 Toyota pickup truck, and a 1995 Honda
Accord LX (this test). This test also included investigating child occupant
kinematics. A dummy representing a 6-year-old child was placed in the
rear seat of the struck side of the vehicle.
The NTIS number is PB99-130312; the cost is $33 for a paper copy or $17
for the report on microfiche.
1994 Toyota Pickup
Broadside Collision With a Narrow Fixed Object: FOIL Test Number 98S006
Publication No. FHWA-RD-98-151
This report contains
the test procedures, setup, and results from the second of three broadside
crash tests conducted at FHWA's FOIL. The three vehicles used for these
tests were a 1994 Ford Explorer XLT, a 1994 Toyota pickup truck (this
report), and a 1995 Honda Accord LX.
The NTIS number is PB99-130304; the cost is $29.50 for a paper copy or
$12 for the report on microfiche.
1994 Ford Explorer
XLT Broadside Collision With a Narrow Fixed Object: FOIL Test Number 98S005
Publication No. FHWA-RD-98-150
This report contains
the test procedures, setup, and results from the first of three broadside
crash tests conducted at FHWA's FOIL. The three vehicles used for these
tests were a 1994 Ford Explorer XLT (this report), a 1994 Toyota pickup
truck, and a 1995 Honda Accord LX.
The NTIS number is PB99-130296; the cost is $29.50 for a paper copy or
$12 for the report on microfiche.
Accident Models
for Two-Lane Rural Roads: Segments and Intersections
Publication No. FHWA-RD-98-133
This report describes
the collection, analysis, and modeling of accident and roadway data pertaining
to segments and intersections on rural roads in Minnesota (1985-1989)
and Washington state (1993-1995). The segments are on two-lane roads,
and the intersections are three- and four-legged intersections of such
roads, which are stop-controlled on the minor legs. Data were acquired
from the highway safety information system, photologs, construction plans,
and state databases. More than 1,300 segments and more than 700 intersections
are included in the final samples on which the modeling is based. Variables
collected include accident counts, traffic exposure, surface and shoulder
width, roadside hazard rating, number of driveways, channelization, horizontal
and vertical alignments, intersection angles, speed limits, and commercial
traffic percentage.
Researchers developed models of Poisson type, negative binomial type,
and extended negative binomial type and applied advanced statistical techniques
to assess the explanatory value of the models in the presence of Poisson
randomness and overdispersion.
The NTIS number is PB99-142713; the cost is $44 for a paper copy or $17
for the report on microfiche.
A New Development
Length Equation for Pretensioned Strands in Bridge Beams and Piles
Publication No. FHWA-RD-98-116
In 1988, FHWA issued
a memorandum that outlawed the use of 15.2-mm- (0.6-in-) diameter strands,
which restricted the spacing of strands, and applied a multiplier to the
American Association of State Highway and Transportation Officials' (AASHTO)
development length equation. This memo initiated considerable research
on the subject of bond of pretensioned strands in concrete. Forty-one
research studies have been undertaken since 1988 to clarify the issues
in the memo.
One of the studies initiated was a large research study conducted at FHWA's
Structures Laboratory at TFHRC. Phase I of the study involved 50 rectangular
prestressed concrete specimens, while Phase II involved 64 members - 32
AASHTO Type II prestressed concrete I-beams and 32 prestressed concrete
sub-deck panels. Half of these members for both phases contained uncoated
strands, while the other half contained epoxy-coated strands. Only the
results from the members containing uncoated strands in rectangular specimens
and beams were discussed in this report.
The NTIS number is PB99-146664; the cost is $36 for a paper copy or $17
for the report on microfiche.
Safety Performance
Testing of a Modified Oregon Multidirectional Slip-Base Sign Support:
FOIL Test Numbers 98F002 and 98F004
Publication No. FHWA-RD-98-111
This report contains
the test procedures, setup, and results from two crash tests performed
at FHWA's FOIL. The objective of these tests was to evaluate the safety
performance of a small sign support system provided by the Oregon DOT
and to provide FHWA finite element model simulation engineers with data
on the performance of a slip-base sign support. Previous tests on large
Oregon slip-base sign supports conducted at FOIL demonstrated an improvement
in safety performance by increasing the previous bolt-notch angle from
60 degrees to 90 degrees. The change was implemented into a small slip-base
sign support design and was tested at FOIL. This report documents the
results from two crash tests using the FOIL bogie vehicle and Oregon DOT's
3X3 TBB sign support.
The NTIS number is PB99-129959; the cost is $27 for a paper copy or $12
for the report on microfiche.
Performance of
Continuously Reinforced Concrete Pavements, Volume V: Maintenance and
Repair of CRC Pavements
Publication No. FHWA-RD-98-101
This report is one
of a series of reports prepared as part of a national pooled-fund study
administered by FHWA and aimed at updating the state of the art of the
design, construction, maintenance, and rehabilitation of continuously
reinforced concrete (CRC) pavements. This report is the fifth in a series
and presents the results related to CRC pavement distress and procedures
for repair of CRC pavements. Since the most troublesome problems with
CRC pavements are punchout distresses and distresses associated with steel
rupture, this report emphasizes the repairs of these distresses.
The NTIS number is PB99-128308; the cost is $29.50 for a paper copy or
$12 for the report on microfiche.
Atlanta NAVIGATOR
Case Study
Publication No. FHWA-RD-98-099
The Atlanta metropolitan
region was the location of one of the most ambitious Intelligent Transportation
Systems (ITS) deployments in the United States. The Atlanta Centennial
Olympic Games and Paralympic Games created a focus for these projects.
All of the systems were to be brought online in time for the Olympic Games.
This report presents the findings of the NAVIGATOR Case Study and documents
the lessons learned from the Atlanta ITS deployment experience to improve
other ITS deployments in the future. The case study focuses on the institutional,
programmatic, and technical issues and opportunities from planning and
implementing the ITS deployment in Atlanta.
The NTIS number is PB99-146656; the cost is $41 for a paper copy or $17
for the report on microfiche.
Modeling Intersection
Crash Counts and Traffic Volume
Publication No. FHWA-RD-98-096
This research explores
the feasibility of modeling crash counts at intersections with the use
of available exposure measures. The basic purpose of exposure is to serve
as a size factor to allow comparison of crash counts among populations
of different sizes. In the context of highway crash studies, at first
glance, vehicle-miles of travel (VMT) appears to be a natural exposure
measure. However, VMT is closely related to traffic density and this raises
doubts as to whether it can serve the intended purpose of an exposure
measure.
Data from four-leg signalized intersections in Washtenaw County, Michigan,
and California and Minnesota were used in this study. Traffic volumes
on the approaches are the routinely available exposure measure. Researchers
noted that in these data sets, the same values of traffic volume were
often carried over several intersections. Using such values of traffic
volume as measures of exposure results in correlations between errors
of the independent variables, which violates the requirements of standard
statistical procedures.
The NTIS number is PB99-104390; the cost is $41 for a paper copy or $17
for the report on microfiche.
1996 Atlanta Centennial
Olympic Games and Paralympic Games Event Study
Publication No. FHWA-RD-97-107
This report presents
the findings of the 1996 Olympic and Paralympic Games Events Study - a
compilation of findings of system performance, benefits realized, and
lessons learned during their operations over the events period. The study
assessed the performance of the various Travel Demand Management (TDM)
plans employed for Olympic Games traffic management. This intermodal system
performance and benefits assessment also presents recommendations for
other major special event host cities and ITS deployments, based on the
lessons learned from the Atlanta Centennial Olympic Games transportation
operations.
The NTIS number is PB99-142432; the cost is $58 for a paper copy or $23
for the report on microfiche.
Articles & Departments
How
Transportation Systems Talk to Each Other
Gold-Rush Ghost Town
Gets a New Alaska Yellow Cedar Bridge
Innovative Traffic Control Practices in Europe
Rural Road Safety: a Global Challenge
CORBOR Improves Safety, Mobility, and Productivity
Pedaling into the 21st Century
Big Bridge, Little Bridge: The Big Dig Soars Across the Charles River
Eisenhower Transportation Fellowships: Proving Ground for the New Transportation
Professionals
Value
Engineering: An Incredible Return on Investment
Managing
Resources and Preparing for the Y2K Weekend
FHWA's Traffic Research Lab (TReL): Searching for Keys to Unlock the Nation's
Gridlock
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