In case you haven’t heard, PC-TRANS has gone electronic.
Our magazine, pc-trans, and our software catalog will be available only
through our web site at: www.kutc.ku.edu/pctrans.
We will notify our customers by e-mail when each new issue is available.
To receive our notices, we need your e-mail address. Please take a minute
to send a message to firstname.lastname@example.org
with “pctrans” as the title. In your message, simply say
“add to list.”
Don’t miss out on the latest news on our transportation software.
Send us a message today! (Rest assured: We will not release our e-mail
list to anyone for any reason.)
This move to the web allows us to be more current and accurate with
our information, to have it available worldwide 24 hours a day, and
save money and natural resources.
—Mehrdad Givechi, PC-TRANS
New Web Site for Nation’s Water Data
The U.S. Geological Survey (USGS) has unveiled its new,
online WaterWatch website which gives visitors an instantaneous picture
of water conditions nationwide in near real-time. The entire Nation's
current stream flow conditions, including high flood-flows and low drought-flows
are depicted on maps with color-coded dots representing conditions at
about 3,000 stream gages. The WaterWatch website is http://water.usgs.gov/waterwatch/.
WaterWatch has a point-and-click interface allowing users to retrieve
maps and graphs of real-time stage and discharge data for individual
stations. From the National map, you can click on a state to find state
data and click further to find near real-time data at an individual
WaterWatch also serves as a geo-spatial front end to NWIS-Web, the USGS
online National Water Information System that provides access to real-time
and historical surface-water, groundwater, and water-quality data. The
NWIS-Web address is http://waterdata.usgs.gov/nwis/.
WaterWatch maps and graphs are organized into three distinct categories:
real time, daily, and 7-day average stream flow. This provides users
with a broad perspective on short-term and long-term stream flow conditions
and variations. The latter category is particularly useful for identifying
regions undergoing prolonged wet and dry spells.
At the time this publication was being assembled, the
new version of TSIS/CORSIM (5.1) was released by the Federal Highway
For more information on its availability, contact Mehrdad
Givechi at PC-TRANS at (785) 864-5655.
DYNASMART-P is one of two state-of-the-art dynamic traffic
operations planning tools developed under the Federal Highway Administration’s
Dynamic Traffic Assignment (DTA) research project. It is currently in
DYNASMART-P supports transportation network planning and traffic operations
decisions in ITS and non-ITS environments through the use of simulation-based
dynamic traffic assignment. This tool combines: 1) dynamic network assignment
(or demand) models, used primarily in conjunction with demand forecasting
procedures for planning applications, and 2) traffic simulation (or
supply) models, used primarily for traffic operational studies.
DYNASMART-P models flows in a traffic network resulting from the decisions
of individual travelers seeking best paths over a given planning horizon.
It overcomes many of the limitations of static tools used in current
practice by increasing the types of alternative measures that may be
represented and evaluated, and broadening the policy questions that
planning agencies can address.
DYNASMART-P requires input data used by most traditional traffic assignment
and simulation models representing networks and traffic flows. The input
data vary with the network being analyzed and the level of detail required
by the user. Complexity of the network could range from a linear freeway
network to an integrated network with High-Occupancy Vehicle (HOV) lanes,
High-Occupancy Toll (HOT) lanes, ramp metering, transit services, possibly
incidents and signal controlled intersections on surface streets.
DYNASMART-P can produce a variety of results to assist users in performing
detailed traffic analysis. The output report contains a wide range of
measures of effectiveness commonly used by traffic engineers for analyses,
such as volumes, speeds, travel times, delays, etc. DYNASMART-P also
produces a vehicle trajectory file and the means to view simulation
results and other characteristics through various graphics formats,
both static and animated.
DYNASMART-P’s built-in features can be used to evaluate complex
strategic and operational network planning decisions. They can also
be used to produce more realistic traffic assignment results for planning
analyses. The potential applications include:
--Assessing impacts of ITS and non-ITS technologies on the transportation
network, such as dynamic message signs, ATIS-equipped vehicles, etc.
--Supporting decision-making for work zone planning and traffic management.
--Evaluating HOV lanes and HOT lanes.
--Evaluating different congestion pricing schemes.
--Planning for special events and emergency situations.
--Analyzing traffic assignment in traditional planning activities.
DYNASMART-P runs on Windows NT 4.0 (service pack 5) or higher. A minimum
of 300 MB of the hard drive space 512 MB of RAM are needed to run the
model, depending the size of the network and analysis time period.
DYNASMART-P has been tested with field data from the Knoxville Metropolitan
Planning Commission. FHWA is currently conducting a beta test to ensure
that the software matches user needs.
Anyone interested is welcome to participate in the beta testing. Contact
Henry Lieu at: Henry.Lieu@fhwa.dot.gov
for more information about DYNASMART-P or to inquire about participating
in the beta testing.
Upon completion of the beta test, FHWA will refine DYNASMART-P and release
it to the public.