Active Travel: London Underground strike sees capital’s busiest cycling day of 2026

by Kevin Borras

New data released by VivaCity, a provider of AI-powered transport data and insight, quantifies the dramatic shift in London’s commuting habits during the recent industrial action on the London Underground.

Analysing data from 99 of its AI-powered roadside sensors across 12 London Boroughs, the study confirmed that cycling volumes increased by 50% during peak hours as commuters turned to active travel to navigate the city.

The analysis, conducted on Tuesday 21 April and Wednesday 22 April provides a data-backed look at the “Tube strike effect.” While social media was flooded with anecdotal reports of crowded cycle lanes, Vivacity’s sensors provided the empirical evidence: morning and evening peak hours saw more than twice the mean cyclist flow compared to the 51-week baseline.

Key Findings from the data:

Biggest Day of the Year so Far: Tuesday 21 April is the busiest cycling day of 2026 so far, and Wednesday 22 April is on course to beat it. Strike Tuesday has a 14.6% lead over the 2nd day.
Massive Volume Increases: Across the 99 monitored sites, peak-hour cycling flows were 50% higher than the previous 8-week average
Central London Hotspots: One specific site capturing North-South flow in Central London recorded cycling volumes nearly four times the norm at the busiest peak hour.
Shifted Commuting Windows: The “peaks” in the data were not only taller but wider, indicating that commuters were forced to, or chose to, travel earlier than usual to accommodate the lack of rail options.

Beyond reacting to short-term disruptions, this data highlights the critical role cycling plays in the resilience of urban transport networks. As cities like London, Manchester and Liverpool increasingly lean into “active travel visions,” the ability to measure these trends accurately is becoming a cornerstone of urban planning fit for the future.

“Measuring cycling is about more than just counting bikes; it is about understanding how a city breathes. Data allows local authorities to identify where infrastructure is over-capacity and where safety improvements are most needed. As we’ve seen in our extensive work with TfL and London boroughs, data-driven insights are essential for justifying the investment needed to make roads work for all road users, not just cars.”, said Mark Nicholson, VivaCity’s CEO.

(Graphic: VivaCity)