‹#›
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](slide0459_image169.gif)
RDE
Data
Environment
![MCj04339420000[1]](slide0459_image172.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
![MCj04348880000[1]](slide0459_image177.gif)
Version 1
Version 2
Estimator
Vehicle
Vehicle
Ped
1: Algorithms and code used to transform RDE
data into estimates of intersection arrival time,
resides in OS Portal