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Not updated since 1997. |
ATSAC
Los Angeles Automated Traffic Surveillance
and Control Center
City
of Los Angeles
Bureau of Transportation Design |
![[image of digits]](http://ccss.ucla.edu/cgi-bin/Count.cgi?ft=0|pad=0|dd=B|df=ng-atsac.dat)
ATSAC control room, sub-basement, old City Hall
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Real Time Traffic Conditions
for the City of Los Angeles
http://trafficinfo.lacity.org/
Institute of Transportation
Engineers: http://www.ite.org/ click on ITS
Traffic Station: http://www.trafficstation.com
California Highway Patrol
(CHP) Traffic Incident Information Page
http://cad.chp.ca.gov/
US Army Corps of Engineers
- Los Angeles District - Reservoir Regulation Section
http://www.spl.usace.army.mil/resreg/htdocs/lacda_status.html |
Old and new Induction loops at an intersection |
Close-up of old and new Induction loops at an intersection |
Intersection status |
Platoon timing (in one direction) |
Intersection Detail |
West LA Sector |
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Synchronized City Busses |
The Bureau has two divisions: (1) Design
Division and (2) ATSAC (Automated Traffic Surveillance and Control) Division.
The Transportation Design Division provides the Geometric and Signal Design
function for the Department through the preparation and review of striping and
signal plans. The City has more miles of street channelization than any other
jurisdiction in the world and the second highest number of City traffic signals
in the country. This Division designs and prepares the plans for these networks.
The ATSAC Design and Construction Division
prepares plans, specifications, and estimates for the construction and installation
of new computer-controlled ATSAC traffic signal systems during the design phase.
It also provides field engineering, and inspection service during the construction
phase of signal implementation.
The Automated Traffic Surveillance and
Control (ATSAC) System developed and managed by the City of Los Angeles Department
of Transportation (LADOT) is a national award winning interconnected and coordinated
signal system which automatically monitors and manages surface street traffic.
With the system, traffic throughout a network is monitored by detectors and
traffic surveillance cameras and various timing programs are automatically implemented
in response to fluctuating traffic demands.
The Automated Traffic Surveillance and
Control ATSAC is a powerful tool for reducing delay and minimizing traffic congestion.
For recurrent traffic, ATSAC reduces travel time by 12%, intersection delay
by 32% and intersection stops by 30%, when compared to traditional traffic signal
timing optimization practices. Every dollar expended for the ATSAC program results
in $32 million in tangible benefits for recurrent travel conditions. These benefits
include monetary savings from reduced fuel consumption and reduced business-related
travel time.
ATSAC has been responsible for the fiber
optic network in the City. Experience has shown that ATSAC is indispensable
in responding to non recurrent events such as parades, freeway closures, special
award ceremonies, major sports events and in emergencies. This system managed
by the ATSAC Operations Division enabled the City to meet surface street traffic
demands and circulation needs in the aftermath of the 1994 Northridge Earthquake.
Total ATSAC signals in operation as of
May 1997: 1,960
Tours (reservations required):
- Tuesdays 9-11
- Thursdays 1-3
Contact:
- Azzam Jabsheh, Transportation Engineer
(213) 485-2815
- Kartik Patel
- Emergency Operations Center (EOC)
- Level P4 (fourth basement)
- City Hall East
- 200 North Main
- Los Angeles 90012
UCLA Affiliate:
Eric Chang
(needs confirmation)