In a previous article, I presented a proposed way to display service frequency on a route in a manner that, I hoped, would convey the pervasiveness of irregular service, be clear to casual readers, and in a consistent format. Several readers commented on this either on Twitter or via email, and I thank all for their contributions.

One immediate change, which I included in an addendum to the article, was to replace the vehicles/hour counts (which indicated how many buses or streetcars passed a point each hour) with an average wait time for a would-be rider. That time was calculated on a weighted basis to penalize long gaps in service.

The average wait time stat has other uses which I will explore later in this article.

My intent in developing this new type of chart is to add to the repertoire of charts I publish when reviewing a route’s performance and to show how, or if, changes the TTC makes to schedules affect service riders actually encounter.

For those interested in the details, read on. Again, comments are welcome. I would like to nail down the format before launching into a series of route reviews.