A quick overview of the Work Zone Data Exchange format, presented at a Tampa Bay Smart Cities Alliance workshop in July 2019.

1. Work Zone Data Exchange
(WZDx)
data format
Sean J. Barbeau, Ph.D.
Center for Urban Transportation Research
University of South Florida

2. Work Zone Data Exchange (WZDx) format
 A way to share work zone
information with other
organizations (cities, DOTs, apps)
 Goals:
• To make travel on public roads
safer and more efficient through
ubiquitous access to data on work
zone activity.
• To help automated driving systems
(ADS) and human drivers navigate
more safely.
 Lead by USDOT FHWA and ITS JPO
https://github.com/usdot-jpo-ode/jpo-wzdx

3. Example use case
 City publishes work zone data in
WZDx format
 All apps and regional partners
immediately reflect changes in
real-time

4. Existing data producers/consumers
Data Producers Data Consumers
Pennsylvania Turnpike Authority
(also representing the Smart Belt Coalition)
HERE
Michigan Department of Transportation Waze
Iowa Department of Transportation Panasonic
Colorado Department of Transportation Toyota
Kentucky Department of Transportation Uber
iCone Embark
*as of July 2019
https://github.com/usdot-jpo-ode/jpo-wzdx#who-is-involved-in-developing-wzdx

5. Data format
 WZDx defines a set of fields
(shown right)
 Fields are formatted in XML or
JSON files
 Full spec is at
https://github.com/usdot-jpo-
ode/jpo-
wzdx/blob/master/full-
spec/full-spec.md

6. Example data from MassDOT
https://github.com/usdot-jpo-ode/jpo-wzdx/blob/master/create-
feed/massdot.md#json-implementation
"WZDx":{
"Header":{
"timeStampUpdate":"2017-11-02T18:57:02",
},
"WorkZoneActivity":{
"identifier":"137097",
"startDateTime":{
"startDateTime-ver":"2016-11-03T19:37:00",
},
"endDateTime":{
"endDateTime-est":"2016-11-04-T05:30:00",
},
"beginLocation":{
"roadName":"I-91",
"roadDirection":"southtbound",
"latitude-est":42.33865,
"longitude-est":-72.63399,
},
…
…
"endLocation":{
"latitude-est":42.33307,
"longitude-est":-72.6214,
},
"wz_status":"active",
"totalLanes":"3",
"openLanes":"right2",
"closedLanes":"left1",
"closedShoulders":"inside",
"workersPresent":"n/a",
"roadRestrictions":"n/a",
"description":"I-91 Southbound Exit (20) Rt-5/Rt-10
Northhampton Hadley to Exit (19) Rt-9",
"issuingOrganization":"MassDOT",
"timestampEventUpdate":"2017-11-02T18:57:02"
},
}
}

7. Creating your own WZDx feed
 The jpo-wzdx GitHub repository contains a number of
tutorials and tools for creating your own WZDx feeds
 See https://github.com/usdot-jpo-ode/jpo-wzdx#how-can-i-
participate

8. Questions for Tampa Bay agencies
 Is anyone currently publishing WZDx data?
• If so:
◦ What tools are you using?
◦ Where can we find your feed?
• If not:
◦ How are you currently sharing work zone data?
◦ Timeframe for publishing WZDx data?

9. Sean J. Barbeau, Ph.D.
Center for Urban Transportation Research @ USF
barbeau@usf.edu