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Case Studies

Open source traffic monitoring for advocates, municipalities, and nonprofits

The data you need to prove your streets aren’t working for everyone.

The Traffic Monitor gives advocacy groups, municipalities, nonprofits, and researchers the primary roadway data they need to make the case, win grants, evaluate programs, and push for policy change. No surveillance. No proprietary lock-in. No mystery box.

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Real deployments

Case Studies

Real organizations. Real streets. Real data that changed the conversation.

SE 7th Avenue & Sandy Boulevard Green Plaza

Depave
 Portland, Oregon

The Challenge

This project combines traffic calming, placemaking, and green infrastructure at the over-paved intersection of SE 7th, Sandy Boulevard, and Washington St. in Portland's Central Eastside. The goal is to develop an integrated street and intersection design with diverse stakeholders (businesses, non-profits, designers, City staff) to manage stormwater, increase tree canopy, improve pedestrian/bicycle safety and connections, and enhance wayfinding and placemaking, ultimately creating a green community plaza.

We provided a comprehensive sensor system of 3 devices to determine their program's impacts and success. Popup Plazas make for a tough data count, with pedestrian crossings, many bike lanes, 5 way intersection and more.




57 days

of counts on 3 devices deployed to private roofs

1,381

average daily pedestrians

19% decrease

in speeding vehicles

The Outcome

Depave is making better-informed design decisions and target specific interventions and pain points with partners and the City of Portland.

River View Cemetery

River View Cemetery
 Portland, Oregon

The Challenge

The Cemetery route has become a beloved asset for pedestrians and bicyclists who lack other safe options for connecting with the waterfront, downtown, and Sellwood. But as motor vehicle traffic has worsened on Taylor's Ferry, Macadam, and the Sellwood Bridge, the Cemetery has also become a cut-through route for drivers. River View Cemetery partnered with Lewis & Clark to engage Portland City Council District 4 representatives and staff around the issue. 

We provided pro bono traffic monitoring at the Macadam entrance to the Cemetery.




18 weeks

of continuous monitoring

386 vs 294

average daily bicycles in summer vs autumn

66% and 15%

of vehicles and bicycles were speeding, respectively

The Outcome

River View Cemetery is using the full analysis to work with advocates and municipals partners making data driven decisions about the use of their space.  

Summer Programs Participation Counts

Lloyd Ecodistrict
 Portland, Oregon

The Challenge

Lloyd ecodistrict is a small nonprofit with a big vision. Championing resilience, equity, and climate protection in Portland's Lloyd neighborhood, they needed to automate participant counting for their extensive summer programs to free up resources and provide accurate, private data counting. Events included free-ranging coffee in the park, Ducksworth dock DJ and  swimming, bicycle criteriums, and dog costume parties.

We provided EcoLloyd with low-cost traffic monitors, equipment, and training for their unique, temporary event monitoring.




20 events

using temporary tripods and batteries

88 dogs

in the annual Pups in the Park event 🐕

> 15k people

were counted across all events

The Outcome

Lloyd Ecodistrict had counts from 20 events to use in reporting, analysis, and grant-writing activities. They were able to get counts of people, bicycles, and even dogs in participating in their event areas.

NE Broadway Pave & Paint Construction

Private deployment, Sullivan's Gulch
 Portland, Oregon

The Challenge

The City of Portland was constructing enhancements on NE Broadway and NE Weidler. These included adding fresh pavement, corner ramps, two vehicle lanes, a buffered bike lane with green skip stripes through the intersection, and safety features. The Weidler intersection was reduced to a single lane around a tight corner with additional signage and pedestrian crossing stripes.

We provided a pro bono traffic monitor deployment to a neighbor that was interested in capturing how the roadway designs change driver behavior before, during, and after construction. This traffic monitor included full suite of sensors including camera, radar, and environmental monitor including air quality (AQ), combustion gases, particulate matter.




Improved AQ

Lower combustion gases, better air quality

6k cars

average daily vehicle count

90% decrease

in speeding vehicles

The Outcome

The neighbor was able to share with their neighborhood and the City of Portland how much more quiet and controlled traffic was through the area and suggest future low-cost changes across the city.

Credentials

Why advocates and municipalities trust Roadway Biome

Matt Zajack has spent years working directly with the advocacy communities this device serves. This is not a tech company that discovered transportation. It is a transportation advocate who built the tool the community was missing.

Direct community partnerships 

Regular pro bono work with municipalities, nonprofits, and advocacy organizations. Deployments conducted and data interpreted alongside the communities that need it.

Published and cited work

Traffic Monitor work has been featured in advocacy publications including Strong Towns and Bike Portland, reaching the exact communities it is built for.

Open source community 

The full hardware and software stack is public on GitHub. The project has an active contributor community. Transparency is built in, not bolted on.

Why Traffic Monitor

Not all traffic technology is the same

Some tools are built for enforcement and surveillance. The Traffic Monitor is built for communities. That is a technical and ethical commitment baked into every design decision.

Our Traffic Monitor

Built for communities

  • Counts and classifies. Never stores images or video.
  • All data stays on the device. Nothing sent to a server.
  • Fully open source. Inspect every line of code.
  • Owned and controlled by your organization.
  • No enabling legislation required.
  • Right-to-repair. No vendor dependency.
  • Designed for advocacy, not enforcement.

Surveillance-Based Tools

Built for enforcement

  • Captures and processes video of individuals.
  • Data sent to and stored on third-party servers.
  • Proprietary algorithms. No transparency.
  • Vendor controls the data and the platform.
  • May require enabling legislation to deploy.
  • Ongoing subscription or licensing fees.
  • Raises civil liberties and data misuse concerns.

Traditional Traffic Engineer Tools

Built for the status quo

  • Primarily measures cars, ignoring cyclists/ pedestrians.
  • Intrusive sensors require specific modifications or placements; e.g. pneumatic tubes, roadway radars.
  • Relies on expensive vendor-proprietary systems & data formats.
  • Often involves costly recurring installation/maintenance fees.
  • Reinforces existing infrastructure assumptions.
  • Data access tied to contracts, limiting community use and involvement.
  • Designed for specific engineering projects, not broad community advocacy.

Start collecting open source roadway data for your community

Pre-order the Traffic Monitor at a discounted launch rate and start building the evidence base your community needs. Hand-built in Portland, OR. Ships within a few months of order.

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