Presentation byAhmad Radmanesh, Traffic Systems Control Engineer,
City of Calgary,
The presentation to the Group covered both the original Honeywell and
the recently installed MIST Traffic Systems for Calgary.
Ahmad also provided information on plans for further expansion of the new
system.
The original Honeywell Traffic Control System was installed in 1979 p;
80 and was based on a distributed microprocessor system which, at the time,
was 'state of the art' technology.
Approximately 50% of Calgary's traffic signals were under central computer
control with this system.
The new Management Information System for Transportation (MIST) provides
a general platform for various types of traffic control.
Already transferred from the original system are the following traffic control
functions:
150 fixed time and 170 actuated signals under central control .
Co-ordinated and free modes of operation .
Left turn advance.
Night flash.
Time of day & day of week programs.
Signal plans to suit traffic patterns.
Audible signals for visually impaired.
Special/Sport Event programming.
Phase 1 of MIST was installed in 1998 p; 99 and consists of: -
The Installation of "MIST " Central System
4 servers & 4 workstations.
Communications hardware
Replacement of 160 signal cabinets, controllers and conflict monitors
in the Central Business District, Elbow Drive & 36th St N.E.
Installation of system detectors for queue detection, ramp spillback
,volume and speed measurements.
Closed Circuit Television.
Variable Message Signs.
Phase 2 of MIST is planned for a future date and will consist of: -
Replacment of hardware at 173 points under central control to move to
"MIST" control.
Installation of CCTV at high volume intersections.
Installation of more system detectors.
Upgrading of existing VMS on Deerfoot Trail to "MIST" .
The highlight of the presentation was a live laptop computer demonstration
of current traffic conditions at Downtown Calgary intersections.
Live data such as volume, speed and vehicle rates were presented together
with intersection historical data both from an overall Downtown view and
for a specific intersection.
