The clock starts before boarding
A trip includes the walk to the stop, the wait, time in the vehicle, transfers, and the final segment. For those who depend on an infrequent route, the wait can be as burdensome as the ride itself.
There is also safety time: additional minutes that the person reserves because they don't know if the bus will come at the expected interval. This uncertainty does not appear in a simple average, but affects work, study, sleep and family care.
Why an average is deceiving
Two people can spend 90 minutes and have different experiences. One takes a direct and predictable journey; another depends on three boardings, long walks and the risk of losing integration. The social impact is not equivalent.
Accessibility studies show that transportation policies change the ease of reaching jobs, health and education. In Rio, infrastructure gains can be canceled out by reducing the level of service or favoring groups that already had greater access.
How BuzuRadar can measure better
Instead of publishing a spectacular number for the entire city, the series can estimate observable components by neighborhood and corridor: approximate wait, regularity, number of transfers and opportunities achievable in 30, 60 or 90 minutes.
- Separate peak and off-peak hours.
- Measure round trips, including at night.
- Publish distribution and percentiles, not just average.
- Indicate groups and territories with little alternative.
- Explain which parts of time are measured and which are estimated.