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ITE Traffic Incident
Management E-mail Discussion Group Digest #9
June 11 to June 22, 1999
This digest contains the following messages:
#5.
getting a document - from
David Kelley
#7. some questions about incident detection -
from Hualiang Teng
#8. Re: TIM: some questions about incident detection
- from T. M. Kurihara
#9. Re: TIM: some questions about incident detection
- from David Kelley
#10. RE: TIM: some questions about incident detection
- from Franklin, Robert B
#11. RE: TIM: some questions about incident detection
- from Chuck Manuel -
MCDOTX
#12. TIM - Closure of Highways for Crash Investigations
- from Corbin, John
#13. TELECONFERENCE Reminder - from
David Kelley
Disclaimer: Topics
that do not pertain to Traffic Incident Management have been omitted from
the discussion group digests to save the reader time when reviewing
messages, and to save space on the web server. See
Discussion Group Etiquette for examples of
other reasons a message may have been omitted from a digest.
-------------------- 5 --------------------
#5. getting a document - from
David Kelley
Top
Date: Fri, 11 Jun 1999 08:21:38 -0700
From: David Kelley <DavidKelley@earthlink.net>
Subject: getting a document
At 07:47 am 6/11/99 -0700, you wrote:
>
>Date: Fri, 11 Jun 1999 07:45:41 -0500
>From: "Juanita Lowe" <Juanita@ksdot.org>
>Subject: Re: TIM: ITE-TIM list, a FULL RESTART
>
>Cannot open document.
>
>Juanita Lowe
>
There was no document sent with the original message.
If you mean the PDF (Public Domain Format) document of the agenda which
the message refers to that you can have sent back to you with a %GET
command, that requires the free
Adobe Acrobat reader to view and print.
You can get a copy at lots of places, try
http://www.adobe.com or
http://www.adobe.com/prodindex/
acrobat/readstep.html#reader if you need one.
If you prefer there is also a Word'97 copy on the machine which you can
get by sending the command " %GET itetim0699agn1.doc "
in the subject line.
Regards, DCK
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#7. some questions about incident detection - from
Hualiang Teng
Top
Date: Fri, 11 Jun 1999 22:22:03 -0400
From: "Hualiang Teng" <hteng@poly.edu>
Subject: some questions about incident detection
Hi, all:
It seems to me that the need for incident detection algorithms have been
decreased in incident management programs. Some reasons are provided
as follows:
* There is a fairly percentage of loops malfunctioning which
influences the quality of the obtained traffic measurements. These
non-reliable measurements can not make the incident detection algorithms
have their idea performance.
* Most of the incident detection algorithms were not designed based on
reasonable assumption on traffic flow characteristics. Such
algorithms are destined to have a bad performance.
* A fairly number of incident management programs relies upon cheap
cellular report or other means other than expensive inductive loops.
* Although video image processing has been claimed to have promise to
detect incidents based on tracking vehicles, no field data demonstrates
its performance.
Due to these reasons, my question to ask you is whether we need to
continue research effort on developing incident detection algorithms for
the loop detector equipped freeway systems.
Also, please provide comments regarding to the reasons I provided above.
Have a good weekend!
Harry
Hualiang (Harry) Teng, Ph.D.
Assistant Professor
Department of Civil and Environmental Engineering
Polytechnic University
Six Metrotech Center
Brooklyn, NY 11201
Tel. (718) 260-3196
Fax (718) 722-7271
Reply to: Hualiang
Teng
Top
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#8. Re: TIM: some questions about incident detection
- from T. M. Kurihara
Top
Date: Sat, 12 Jun 1999 11:57:47 -0400
From: "T. M. Kurihara" <tkstds@mindspring.com>
Subject: Re: TIM: some questions about incident detection
Is there any work being done in this area by the University of Florida
Traffic Simulation and Modeling Center. My contact was Charles E.
Wallace, cwallace@ce.ufl.edu, and
his contractor, Kaman Sciences, who were also working with the TMDD
committee to develop a traffic simulation and modeling data
dictionary. There was, as I recall, discussion at one of their
meetings couple of years ago about having a library of algorithms and
other commonly used routines for reuse. Don't know where that has
gone since. I have not seen Charles or anyone from TSDD at the TMDD
meeting. James M. Cheeks, Jr., may know about the ITE TSDD project
established under one of the ITE Councils. \\TomK//
Tom Kurihara
3800 North Fairfax Drive, #207
Arlington, VA 22203-1759
703-516-9650
703-516-4688 fax
t.kurihara@ieee.org
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#9. Re: TIM: some questions about incident detection
- from David Kelley
Top
Date: Sun, 13 Jun 1999 09:39:04 -0700
From: David Kelley <DavidKelley@earthlink.net>
Subject: Re: TIM: some questions about incident detection
Of course we should continue loop bases Incident detection work. And
while it is true that 911-PSAPs are getting an increasing level of
Cellular reports right behind any incident, just talk to any dispatcher
and they will tell you the multiple people calling rarely know where in
fact they are located - so nailing down the effected segment can be fun
during the early verification phases.
If you are looking for the future of detection methods I would say
consider research on tag based technologies. Frankly if your
community is very sparse with loops today I don't think you will be making
a massive infrastructure investment in the next 5 years. It would be nice
if everyone had camera (ala Atlanta but there is just no way to pay for
it) so I do not see that happening either.
Frankly I have come to believe that blind OD pairs from tags and tag
readers will be the only way to fill the so called data-gap in local flow
monitoring (both for incident detection and for ATIS use). I would
wager we will see a reader based incident detection algorithm
session become a regular feature of TRB for years to come.
(Finally I get to say something on this list not concerning how the email
bouncing problem) DC Kelley
Regards, David Kelley
ITS Programs Development 626-915-4488 Phone
SubCarrier Systems Corp. 626-915-3168 Fax
____________________________________________
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#10. RE: TIM: some questions about incident detection
- from
Franklin, Robert B
Top
Date: Sun, 13 Jun 1999 10:56:09 -0600
From: "Franklin, Robert B" <robert.b.franklin@lmco.com>
Subject: RE: TIM: some questions about incident detection
David:
I have to weigh-in on behalf of the cellular phone. You are absolutely
correct about the impact of the cell phone on the call-takers in the
various Public Safety Answering Points (PSAP). There are over 90,000
emergency calls made by cell phones everyday in the US.
Ninety percent of these are related to some form of highway or traffic
incident. And you are correct in your assertion that nearly fifty percent
of the callers have no idea where they are. The growing number of calls is
what has driven the FCC to pass the rule requiring 125m location by 1 Oct
2001. It is also the reason that a number of communities have begun to
install locator signs along their freeway system.
I really believe that in less than two years we will be able to accurately
locate (within twenty meters) and determine the direction and velocity of
travel. While this capability is principally being developed for public
safety, the data will be available to us.
I am in no way saying that there is not work to be done to make this
information useful to us but I think its going to happen sooner than
later. We are going to have to adapt the current algorithms to
accept, filter and process this data. But I think there will be a
growing acceptance of this capability since the cell phone population
continues to grow at an astronomical rate (can you say 10 digit dialing?),
they are everywhere and people like to call in emergency information (at
the tune of up to 60 plus calls about an incident on a downtown freeway)
and their deployment is essentially free to the traffic community (we may
have to pay some form of fee to access the data from the 911 data base).
I speak with a bit of background on this as I was (in my former life) the
TRW project manager that built the overall Atlanta system. Plus I have
been tracking the interconnect of public safety and the traffic management
community for the past three plus years.
It going to happen.
Tip
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#11. RE: TIM: some questions about incident detection
- from Chuck Manuel -
MCDOTX
Top
Date: Tue, 15 Jun 1999 13:48:47 -0700
From: Chuck Manuel - MCDOTX <ChuckManuel@mail.maricopa.gov>
Subject: RE: TIM: some questions about incident detection
I appreciate the interest and communication that is taking place within
the ITS community. However, we need to include the 9-1-1 folks
because this will have a direct influence on their service deliverabilty.
Most PSAP'S in smaller communities do not the technical expertise or
infrastructure in place to handle wireless locations today and to expect
them to be on-line in two years is wishful thinking. I feel that we
need to extend a hand to our local emergency providers and let them know
what resources and capabilities we have in the various transportation
agencies. Since former life was mentioned, I also have first hand
experience working for the Phoenix Fire Dept. for the past 26 years.
Now, myself and the county assoc. of governments is conducting meetings
with the emergency providers. Our intent is help where needed and
offer advice and assistance as the need arises. I would appreciate any
information from those who come down this road before and their successes
and setbacks as well as extend my hand to help with thoughts or ideas
others may have....thanks....
chuck manuel
Emergency Management Services Coordinator
Maricopa County Dept. of Transportation
602-506-4612
chuckmanuel@mail.maricopa.gov
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-------------------- 12 --------------------
#12. TIM - Closure of Highways for Crash Investigations
- from
Corbin, John
Top
Date: Tue, 15 Jun 1999 15:54:17 -0500
From: "Corbin, John" <john.corbin@dot.state.wi.us>
Subject: TIM - Closure of Highways for Crash Investigations
<<IM.WPD>> <<IM-SUM.DOC>>
Attached synopsis provides some interesting inventory information on
full-freeway-closure crash investigations and practices done by
FHWA-Oregon.
(Thanks to FHWA-Wisconsin)
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#13. TELECONFERENCE Reminder - from
David Kelley
Top
Date: Mon, 21 Jun 1999 16:42:18 -0700
From: David Kelley <DavidKelley@earthlink.net>
Subject: TELECONFERENCE Reminder
Just a reminder:
The ITE TIM COMMITTEE is tomorrow
TUESDAY, JUNE 22, 1999 - 10 am TO NOON (CST)
Call-In Number is: (312) 470-0114 Pass Code:
27035:
Need the agenda again?
Send a message with "%GET itetim0699agn1.pdf"
in the subject line to the list
Regards,
David Kelley
ITS Programs Development 626-915-4488 Phone
SubCarrier Systems Corp. 626-915-3168 Fax
____________________________________________
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