‹#›
U.S.
Department of Transportation
Open Source Portal Use Case
Connected Vehicle
Data
![C:\Documents and Settings\m23505\Local Settings\Temporary Internet Files\Content.IE5\M1K5RSTB\MCDD01775_0000[1].wmf](slide0458_image183.gif)
RDE
Data
Environment
![MCj04339420000[1]](slide0458_image186.gif)
2: Researcher “Sally” interested in adding
pedestrian approach time to intersection downloads source code
2
1
3
3: “Sally” modifies code to add pedestrian
approach. “Sally” implements version 2 prototype and
uploads source code
for version 2 back into OS Portal
4: Freight researcher “Mac” interested in
adding approach time for freight vehicles
downloads estimator version 2
4
5: “Mac” modifies code to add freight vehicle
approach times. “Mac” implements version 3 prototype and uploads
source code for version 3 back
into OS Portal
![MCj04348880000[1]](slide0458_image190.gif)
5
Version 1
Version 2
Version 3
Estimator
Vehicle
Vehicle
Ped
Vehicle
Ped
Freight
1: Algorithms and code used to transform RDE
data into estimates of intersection arrival time,
resides in OS Portal