ArterialPulse turns a phone into a defensible before/after travel-time study tool for arterial corridors. Built by traffic engineers, for traffic engineers.

WHAT IT DOES

Pick a corridor, tap START, drive. ArterialPulse records GPS, detects each signal automatically as you pass it, and computes per-segment metrics in real time. Everything syncs to your private engineering portal, which generates client-ready reports (PDF, Excel and CSV) with industry-standard methodology built in.

ON THE PHONE

• One big START button and a driver-glance header. The driver never takes eyes off traffic.
• Automatic signal detection on configured corridors.
• Auto-detects the turnaround and starts the return-direction run automatically.
• Arterial Configuration: map a new corridor and mark its signals in a single drive.
• Free Run: just drive, and mark signals later in the portal.
• Offline-first local database. Record anywhere, sync when you're back online.
• Keeps the screen awake while recording so the phone won't sleep mid-run.
• Auto-sync after every run, plus a tap-to-retry badge if the network drops.

IN THE PORTAL

• Time-Space Diagram with median and percentile bands.
• Speed/Distance plot per signal.
• Travel-Time Distribution histogram with PTI, BTI and LOTTR.
• Delay Breakdown: cruise vs. accel/decel vs. stopped.
• Welch's t-test for before/after comparisons, with effect size and p-value.
• HCM Arrival Type for platoon analysis.
• Reliability KPIs per study (PTI · BTI · LOTTR · CoV) with FHWA bands.
• Economic Impact: dollar delay, fuel, emissions and stops, annualized.

REPORTS

Download client-ready PDFs with executive summary, study summary, reliability KPIs, economic impact, platoon arrival, methodology and an assumptions appendix. Excel workbooks carry per-run detail across multiple sheets. CSV exports cover overall, detailed, reliability and economic data.

METHODOLOGY BUILT IN

• Industry-standard speed bands and travel-time methodology.
• FHWA reliability metrics (23 CFR 490 thresholds).
• HCM Arrival Type 1–6.
• USDOT Value of Time defaults.
• EPA Social Cost of Carbon defaults.
• CalTrans ICF defaults for fuel and emissions.

WHO IT'S FOR

Transportation engineers, traffic signal consultants and agencies running before/after studies on arterial corridors. ArterialPulse is a B2B work tool: your portal account is licensed by your organization, and the mobile app is the field tool that feeds it.

LOCATION AND PRIVACY

ArterialPulse collects precise location, including in the background, but only while a recording session is running. You start a session by tapping START and end it by tapping STOP DATA COLLECTION. Location collection begins and ends with the session and never runs outside one.

Background access is what makes the study possible: a field engineer is driving in traffic and cannot keep the app in the foreground or the screen unlocked for the length of a corridor. While a run is recording, Android shows a persistent "ArterialPulse — recording" notification for the entire session, so it is always visible that collection is in progress.

Your data goes only to your organization's private portal, never to advertisers, data brokers or third-party analytics. The app contains no advertising, analytics or crash-reporting SDKs. Full policy: https://pulse.rhythmtraffic.com/privacy

GETTING STARTED

1. Start a 30-day demo at https://pulse.rhythmtraffic.com/signup
2. Install ArterialPulse, sign in with your portal account, and start recording.
3. Review and analyze runs in the portal. Generate reports. Deliver to your client.

Built by Rhythm Engineering. Questions? support@rhythm.engineering