Traffic signals assume people walk at 1.0 m/s.
Many don't.
WalkPhase measures the gap — and shows how to fix it.
Signal timing standards assume a uniform walking speed of 1.0 m/s. But older adults, people with disabilities, parents with children, and many others walk slower. The result: they're still in the road when the signal changes. WalkPhase quantifies this gap at every intersection.
WalkPhase turns a smartphone into a pedestrian signal intelligence device.
Using on-device intelligence, it detects crossings, learns signal timing patterns, and identifies where real-world conditions don't match design assumptions.
Measures actual pedestrian speed at each crossing — not assumptions from a manual.
Learns how each intersection's signals actually operate over time.
Learned timing modelDetects when a pedestrian arrives, starts crossing, and completes a crossing.
On-device intelligenceFlags intersections where available walk time is insufficient for real-world users.
Calculates exactly how many additional seconds each crossing needs.
No roadside hardware. No signal controller access. Just a smartphone.
WalkPhase provides the missing layer in pedestrian safety analysis.
Illustrative figures based on early pilot data and published research on pedestrian walking speeds.
WalkPhase uses on-device intelligence to understand how people move through intersections — and how signals actually behave.
Automatically detects when a pedestrian arrives, starts crossing, and completes a crossing — using motion and location data on-device.
Learns how each intersection operates over time — without infrastructure access or signal controller integration.
Identifies crossings where available walk time is insufficient for real-world users — especially older adults and people with mobility limitations.
Helps cities identify which intersections require intervention first — ranked by risk, equity impact, and feasibility.
Every element of WalkPhase aligns with the priorities outlined in the SS4A Implementation Grant NOFO.
Real walking speed data at every intersection — not estimates or averages from a manual.
Patented crossing detection and signal timing learning — all processed on-device with no cloud dependency.
Directly measures outcomes for older adults, people with disabilities, children, and anyone who doesn't walk at 1.0 m/s.
No roadside hardware, no signal controller access. Deploy across any intersection with a standard smartphone.
Cross-references crossing risk with national fatality data to support equity-weighted prioritisation.
Operational within 4–8 weeks. No procurement delays, no infrastructure lead time.
Custom reporting tailored to federal deliverable requirements — walking speeds, timing gaps, equity metrics, and intervention recommendations.
Quantified, intersection-level data that maps directly to SS4A performance metrics and deliverables.
A small team generates statistically meaningful data in 30 days — no infrastructure, no integration, no delays.
Choose 10–15 priority intersections based on crash data, equity concerns, or Action Plan priorities.
10–20 participants carry smartphones with WalkPhase during their normal daily routines — or as dedicated data collectors.
Over 30 days, each participant generates multiple crossings per intersection. With 15 participants across 10 intersections, a typical pilot produces 1,500+ recorded crossings.
WalkPhase delivers intersection-level safety analysis: real walking speeds, timing gap identification, risk scoring, and prioritised intervention recommendations.
Intersection-level safety insights
Equity metrics for vulnerable users
A clear, data-driven case for intervention
Select your situation to see the simplest path forward.
Best path for larger funding and faster deployment
Combines planning + real data collection
Fastest way to build a strong, evidence-based application
Designed to fit within SS4A implementation grants — or run as a direct pilot.
Typical pilot engagements range from $75k to $125k depending on scope.
Included in your Implementation Grant application. No upfront cost during the application phase. Delivered upon award.
Run independently of grant timelines. Ideal for faster deployment, early validation, or agencies with existing budgets.
Pilot scope and pricing are tailored to each partner.
Patented technology. 2 U.S. patents granted.
The product team behind WalkPhase brings over 20 years of experience delivering innovative, high-tech pilot programs in partnership with U.S. transportation agencies — from concept through deployment.
WalkPhase is currently in pilot-stage development, with early demonstrations and agency conversations underway.
Whether you're preparing an SS4A application or exploring a direct pilot, we'd love to hear from you.
Or email us directly at team@walkphase.com