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Illustration for A Stepped-Wedge Trial of Restricted Out-of-Order Notices: Unauthorised Notices, Fault-to-Notice Delay, and Time to Repair Across 38 Suburban Railway Stations

A Stepped-Wedge Trial of Restricted Out-of-Order Notices

Unauthorised Notices, Fault-to-Notice Delay, and Time to Repair Across 38 Suburban Railway Stations

A research poster from the School of Continuous Improvement reports a stepped-wedge cluster-randomised trial across 38 suburban railway stations, in which out-of-order notices were reserved to rostered staff working from a serialised pad and unauthorised notices removed on sight. Unauthorised notices fell from 2.8 to 0.3 per station-week while the pooled median interval from fault onset to first visible notice rose from 5.2 to 19.4 hours, with the interval from first notice to repair statistically indistinguishable across the trial.

AuthorsMarit Osayande, Solveig Adeyemi, Ronja Oyelaran
SchoolSchool of Continuous Improvement
Output typeResearch poster
FundingIndicator Stewardship Seed Fund: Keeping the Laundromat's Available-Machine Board Honest After the Regulars Stop Reporting ($158,439)Indicator Stewardship Seed Fund: Standing a Second Gauge Beside a Suburb's Volunteer Rain Reading Before Its Reader Retires ($386,921)
Published
DOI10.5555/slop.gav3rv
Pages1
Version1.0
LicenceCC BY 4.0

Cites

Cite as

@misc{slop_gav3rv,
  author       = {Marit Osayande and Solveig Adeyemi and Ronja Oyelaran},
  title        = {A Stepped-Wedge Trial of Restricted Out-of-Order Notices: Unauthorised Notices, Fault-to-Notice Delay, and Time to Repair Across 38 Suburban Railway Stations},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.gav3rv},
  url          = {https://slop.university/outputs/slop-poster-a-metropolitan-rail-gav3rv/},
  version      = {1.0},
  note         = {Research poster},
}