June 2026: Delivered Turn Restrictions Handling Enhancements (no_entry/no_exit) for opentripplanner/OpenTripPlanner, including test coverage and improved issue filtering for TurnRestrictionUnknown. Added a dedicated test for issue 2731 and applied fixes for no_entry/no_exit handling, plus code cleanup (removing unused imports). Impact: improved routing accuracy for complex turns, reduced incorrect maneuvers, and improved maintainability. Technologies/skills demonstrated: Java-based routing core, test-driven development, unit/integration testing, refactoring, and Git-based workflow with clear commit traceability (commits included in this period).

April 2025 monthly summary focusing on security hardening and tooling improvements in digitransit-ui. Key work included upgrading core dependencies to remediate vulnerabilities (Express, body-parser, axios; Babel runtime; polyfill-library) and migrating to base64-arraybuffer:1.0.2, with yarn.lock updated. Added a Yarn upgrade-interactive plugin and upgraded accessibility testing tooling to boost developer productivity and test coverage. These changes reduced security risk, simplified upgrade paths, and improved overall maintainability and deployment reliability.