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The City of Portland, Oregon

Portland Bureau of Transportation

Phone: 503-823-5185

Fax: 503-823-7576

1120 SW Fifth Ave, Suite 800, Portland, OR 97204

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About the Sensors

sensors

The sensors are installed on light poles on three of Portland’s most dangerous streets: 122nd Avenue between Burnside and Duke; SE Division Street between 11th and 122nd; and Hawthorne between 11th and 46th. A total of 200 sensors are part of the project. They cost $126,000 and were funded by general transportation revenue. (The full breakdown of the project budget can be found here.)

The sensors have hardware and software that allow them to collect information about environmental conditions, parking and transportation activities. The sensors include 2 cameras, an array of environmental sensors for measuring temperature, pressure and humidity, a CPU/GPU for performing real-time analytics, a solid state drive for local data storage, and cellular LTE hardware for data transmission.

Each sensor takes a picture of the street. Image analysis software identifies the number and speed of pedestrians, bicyclists and motor vehicles that cross each camera’s field of view. The data extracted from these pictures is then transferred to a data repository, where city staff can access it for analysis. The pictures taken by the cameras can't be accessed and are not stored (they are deleted after the data is extracted).