As a regular TTC commuter, Asvathaman was once heading out to a writing workshop she'd been looking forward to for weeks, when mid-journey, TTC subway service was halted and replaced with shuttle buses. "TTC Delay Insights grew from that moment. In her quest for answers, Asvathaman used TTC subway delay data from the City of Toronto's Open Data Portal and manually categorized over a hundred TTC delay codes into nine clear categories, such as infrastructure issues and vehicle problems. "I was genuinely surprised that in recent years, Toronto has been losing over a month every year to subway delays. "The TTC already publishes delay data, which is commendable.