1. TransPHAT IP Radios Glenn Anderson
Traffic Operations – System Operations Branch
2012 Traffic Engineers Meeting

2. TransSTAMP, what is it?
A system to automatically monitor the performance of our roadways
At this time we are focusing on arterials
Easier to deploy on interstates

3. Bluetooth
Approx 10% of vehicles have Bluetooth “on”
Ubiquitous

4. TransSTAMP Concept of Operations
A Bluetooth device constantly broadcasts its unique address (MAC) so that other devices can find it and pair with it.
If you listen for passing devices you can match the address at downstream locations to determine the travel time.

6. Widely used

8. In-house solution

9. Why build in-house? Integration with existing radios and routers
Remote communications to 1300 signals
Existing network can handle the data
Firewall problems previously worked through
No duplicate maintenance costs
KYTC devices share existing signal network
Initial reader cost
Commercial units - $5000
KYTC unit $200
Lower cost means we can install hundreds

10. Contractual issues Recurring charges Sole Source?
Preferred business model is a service
(service = continuous cash flow)
Cellular charges (a router at every reader)
$50/reader/month
Data processing charges
$50/reader/month, more cash flow
Sole Source?
Rebidding issues
Apples vs Oranges if you have multiple vendors

11. GIS Integration No national standards for roadway coding
County, Route, Milepoint
KY milepoints start over at each county line 
Vendors forced into using least common denominator
Google maps
TIGER maps
TransSTAMP uses the KYTC GIS layers
We leverage our existing GIS data
Segment speed limits
Linking to traffic signal layer

12. Transparency in data processing
Data ownership
KYTC owns our data and can distribute as we see fit
Data timeliness
Readers are polled every 5 minutes
Select segments will be automatically processed
Transparency in data processing
No “secret algorithms”
Performance measures that we define and understand
Still working on the PMs

13. Current Locations 75 TransSTAMP Readers:
Paducah, Murray, Hopkinsville, Elizabethtown, Bardstown, Boone Co, Kenton Co, Frankfort, Versailles, London

14. Radcliff & E-Town

15. 8 mile segment, US 60 Versailles to Frankfort, easy peasy

17. 1 mile segment, Frankfort, Chenault to US 421

19. Another source of error – detection raduis 300’ range with no attenuation more attenuation = more precision but fewer samples

20. 1.4 mile segment, Kenton Co. KY 17 Tuscany to I 275
85th percentile speeds:
6:00 – 7: mph
7:00 – 8: mph
8:00 – 9: mph
1.4 mile segment, Kenton Co.
KY 17 Tuscany to I 275

21. Single point data – no matching
“Delay” – number of times a single device is detected before it leaves the area
“Volume” – raw number of unique MAC addresses detected

22. Pros Continuous 24/7 travel time runs by thousands of “real” drivers
Long term trends visible
Reduces the need for GPSTravel data collection
Supports MAP-21 federal initiative
Can identify the time of day a problem is occurring
Can identify if the congestion on a certain day was abnormal
Bonus data such as “delay” and “volume”
O-D Studies possible

23. Cons Accuracy suffers on shorter segments
For length < .3 mi the data is essentially unusable
Delay includes all approaches
Good for an overall PM of the arterial
Bad since you cannot see just the coordinated direction
Does not replace eyes in the field
Does not show exactly where the delay is occurring or how to fix it
Outlying data points inevitable

24. Sharing the data GIS Layer (future) Custom Segments and periods – call
Standard Segments
Standard Time Periods
Standard Performance Measurements
Color coded map
Custom Segments and periods – call
User friendly tool for analyzing data
O-D tools (future)

26. Our biggest obstacle: Finance Cabinet IT Procurement
$51

27. TransPHAT News Version 3.0.8 – April 2012
Adds some support for IP Radios

28. TransPHAT News Changes due to IP Radios
Communicate with multiple signals simultaneously
TransACT (Automatic Timing Comparison) not finished
System Wide observe features may be possible
Second by second display may be limited by radio bandwidth
Automatic monitoring of RSSI and Temperature possible

29. TransPHAT News An update is coming Questions, Problems, Suggestions?
LabVIEW 2012 Run Time Engine
Full installation will be required for next version
At least its not Adobe Flash Player…
Questions, Problems, Suggestions?
Very little feedback the last few years – is this good?

30. New Controllers, The Future?

31. IP Radios Old network New network Ethernet (router) at master cabinet
Serial radios at locals
New network
Ethernet radios at each local
Multiple devices can now share the network
TransSTAMP
Conflict Monitors
Cameras
Detectors
Controllers

34. IP Radio Benefits Small size Extremely sensitive – good range
Remote Access and diagnostics
Multiple Repeating possible
Network ID is text – easier to interpret
Easy to program
Serial and Ethernet interface
Lower cost by about 1/2

39. Repeating Example:
3 levels of repeaters

40. IP Radios – current issues
“De sensitization” in certain installations
Repeaters?
Cabinets/Poles/Spans with grounding problems
New model adds additional surge protection
Have same problems with Encom 5200, we just do not have the ability to see it happening remotely

41. Remote management via browser
IP address of the router
ID of the traffic signal
The number 51000
:51006
Port = ID (#6)
Username = admin
Password = zombie

42. Reports Users List Use of reports, questions, comments
Reports Users List Use of reports, questions, comments

43. Questions?
x3888