ky statewide traffic signal system its mid-america 2005 columbus, oh
TRANSCRIPT
1987
No Standardized hardware or firmware
Low Bid Lottery
Difficult to maintain
Confusing to program
“Universal Manual” not working
Tighter NEMA specs not working
1989
Adopted the Caltrans 170 spec and Wapiti W4IKS firmware
Initial resistance from technicians
Now “the best decision we ever made”
Mid 1990’s
Field equipment changout complete
KY Traffic Signal Facts
• KY maintains 2500 traffic signals
• All of those signals use Model 170 equipment and Wapiti W4IKS firmware.
• Many of our signals are interconnected
• Wapiti does nearly everything we need it to do
• Our people are trained in maintaining the model 170/Wapiti controllers
What could be wrong???• We estimate that we have 2500 traffic signals• We know that they are located in KY• Somewhere on a PC, laptop or PDA is the
correct timing for each of those signals• We many “bonus” timing files out there• Technicians never modify timing in the field • Our signals are working correctly because the
police have not called today• Every coordinated signal is in-step because the
170 controller is as good as an atomic clock
Overall the W4IKS standard has served us well.
Standards are important…that is why there are so many
What we need
• A way to manage our timing data
• A way to modify signal timing (from our desks)
• An automated process to check the status of every signal every day
Unique Needs
• We have very limited bandwidth to our signals
• We don’t need to monitor our signals second-by-second
• We do need to use our existing hardware and firmware
• We do need to use the technician/PDA as a communication link
19
We wanted a simple and easy to understand user interface
19
We wanted a simple and easy to understand user interface
We want an easy to understand user interface
ATMS Map
• Platform for display of traffic status, devices, etc.
• Geographically accurate
• ESRI data
• Layers support
– Traffic Controllers
– Traffic Conditions (links)
ATMS Explorer
Platform for Schematics
Import Graphics• WMF• BMP
Uses common drawing tools
• DXF, TIFF, JPEG
Uses Active-X Controls
Used to Construct “Management Views” of System Elements
Links Directly to the Device Controls
Supports Hyper Links
TransSuite TCS Users Interface
Primary interface to TCS
Online device configuration Intersection System Detector Section Zone
Multiple views of system devices By Jurisdiction By Section By Zone By Device
Scheduler View
Device Reports
System Log
Links with ATMS Map and Explorer
KYTC System Overview• Base KYTC System:
– TransSuite Traffic Control System (TCS) Server
– Database Server
– Central Communications Server (CCS)
– Support Server
– Operator Integrated Workstations (IWS)• ATMS Map
• ATMS Explorer
• TransSuite TCS User Interface
• Unified Controller Manager
KYTC System Architecture
CCS Network
TOC Network
TCS Server
CCS (Serial) CCS (Serial) CCS (IP)
Workstation Workstation Workstation
Support Server- Remote Access- DHCP- DNS- NTP- VPN
Modem
PublicTelephoneNetwork
Laptop computer
Database Server
NTP Server
Where we are at…
• Inventory 97.5% complete (73.8% of all statistics are made up on the spot)
• Initial software installation in progress
• Field controllers coming on-line
• KY modifications being added and tested
Comments, Questions?
• Glenn Anderson
• KY Transportation Cabinet
• Division of Traffic Operations
• 200 Mero Street
• Frankfort, KY 40622