Update on Open Source ATSPM - July 20, 2022

[taylormd3]

ATSPM Users using the Open Source ATSPMs,

Version 4.3

As of July 5th, UDOT installed version 4.3 on our production website at: https://udottraffic.utah.gov/atspm. Since then, we have been working on a few bugs and have just about everything working really well. Before we release it on GitHub we need to fix one more bug (that will take us just a few days to fix). In addition, we need to provide deployment instructions and a seeding script as enough of the database structure has changed so others can successfully deploy version 4.3. We anticipate this will take 1-2 weeks to complete, so we're hoping 4.3 is on GitHub no later than the 3rd of August. Several new features are available with version 4.3, including:

• New Wait Time Measure from GDOT.
• Left Turn Gap Analysis Report - this report is password protected.
• Measure Default Settings - Allows for Admin users to change all the default settings in ATSPM.
• Area and Jurisdiction Configuration - Includes map and metric filtering.
• 15-minute aggregation tables - Several tables and algorithms created/verified to aggregate the 1/10th second data into 15-minute bins.
• Pedestrian Delay Metric - Reworked the metric so to add filtering by a time-lapse between pushbutton presses and other useful features.
• Timing and Actuation Metric - Fixed and enhanced this metric so the pedestrian actuations show up correctly on non 1:1 pushbutton/phase relationships.
• Left Turn Gap Analysis Metric - clarified chart text.
• Posted speed limits - pulled them out from having them on a detector channel and placed it on the phase/direction.
• Several bug fixes and enhancements.

Version 5.0

• Please note that you will want to upgrade to version 4.3 before you upgrade to version 5.0 when it's ready.
• Migrate from .NET Framework to .NET CORE and greatly improve the speed and robustness of ATSPMs.
• The data logger will be greatly improved (it will be one of the 1st things deployed).
• The 15-minute aggregation will be retrievable (similar to "Raw Data Export).
• Data compression
• Two new metrics (Time-Space Diagram & Green Time Utilization).
• Several buzz words have been thrown around by our developers that this version may include parts of, including: "WCF going away", "Angular", "react query", "swagger", "OData Query", "Postman". No idea what this means but it sounds impressive.
• We don't know when this will be ready; however parts of it have been in development for several months and since we are just wrapping up version 4.3, there are an additional 3 more developers to work on it.

-- Mark Taylor
UDOT Traffic Signal Operations Engineer