Written by John Moon, Head of Product at STraffic For transit agencies considering cash minimization—or taking their first step toward digital fare payments—it is important to begin with a clear vision of the desired rider experience and long-term operating model. The passenger experience is shaped by two fundamental questions: How does the rider purchase the fare? How is the fare validated at boarding? Each payment method serves a different passenger profile and creates diff

Public transit is evolving, and fare collection is at the center of this transformation. While many systems initially relied on prepaid smartcards to replace cash, today’s mobile and contactless payment solutions support lower dwell times, reduced cash handling, and data-driven service planning. These digital methods simplify how riders pay while giving transit agencies greater visibility into system performance, fare compliance, and ridership behavior. Platforms like OpenFar

Near the bridge at Oksu Station, a pilot site for Seoul Metro’s tagless fare system. Seoul Metro is one of the busiest subway systems in the world, carrying an average of 6.6 million passengers daily on its core Lines 1–8 — nearly twice the ridership of New York City’s subway, which serves about 3.4 million riders per day . Seoul's population density is 45,000 people per square mile , compared with New York’s 29,000 people per square mile. Despite this high volume, Seoul Met

Fare evasion had become a pressing challenge at several LA Metro stations, with non-paying riders frequently outnumbering paying customers. This growing imbalance underscored the urgent need for a more secure and efficient fare collection system. STraffic secured $26 million in contracts to modernize the system, replacing 20-year-old faregates that were no longer effective and lacked integration with modern payment technologies. Each of LA Metro’s 21 stations presented uniq