An examination into Stockholm's seven-month-long trial period with congestion taxes, this collection of articles analyzes the political and administrative processes of the first Swedish congestion experiment and its aftermath. Describing the preoccupations, hopes, and impressions that came along with the trial period and how feelings fluctuated among the inhabitants of Stockholm before, during, and after the trial, this study provide tools for avoiding the pitfalls, with hopes that the successes of the Stockholm Trial will be repeated in other contexts.