About Critical Mass

Critical Mass rides are self-organized, non-commercial and non-competitive, and they operate with diffused and informal decision-making, independent of leaders. They are often also unofficial, foregoing permits and official sanction from municipal authorities. Typically, only the meeting place, date, and time are fixed. In some cities, the route, finishing point, or attractions along the way may be planned ahead. Participants have differing purposes for the event, such as celebrating their choice of the bicycle for transportation, and enjoying car-free social time on city streets.
Critical Mass rides have been perceived as protest activities. A 2006 New Yorker magazine article described Critical Mass' activity in New York City as "monthly political-protest rides", and characterized Critical Mass as a part of a social movement; and the UK e-zine Urban75, which advertises as well as publishes photographs of the Critical Mass event in London, describes this as "the monthly protest by cyclists reclaiming the streets of London". However, Critical Mass participants have insisted that these events should be viewed as "celebrations" and spontaneous gatherings, and not as protests or organized demonstrations. This stance allows Critical Mass to argue a legal position that its events can occur without advance notification of local police.

Critical Mass rides vary greatly in many respects, including frequency and number of participants. For example, many small cities have monthly Critical Mass rides with fewer than twenty riders, while on the opposite extreme, in what have been the largest events using the name Critical Mass, cyclists in Budapest, Hungary hold only two rides each year on 22 September (International Car Free Day) and 22 April (Earth Day). They attract tens of thousands of riders. The April 22, 2007 Budapest ride participation was generally estimated at 50,000 riders.

The first ride took place on Friday, September 25, 1992 at 6 P.M. in San Francisco. At that time, the event was known as Commute Clot and was composed of a couple dozen cyclists who had received flyers on Market Street.
Shortly after this, some participants in that ride went to a local bicycle shop for a screening of Ted White's documentary Return of the Scorcher, about bike culture overseas. In that film, American human powered vehicle and pedicab designer George Bliss noted that, in China, both motorists and bicyclists had an understood method of negotiating intersections without signals. Traffic would "bunch up" at these intersections until the back log reached a "critical mass" at which point that mass would move through the intersection. The term caught on and replaced Commute Clot as a name at the time of the second event.
By the time of the fourth ride, the number of cyclists had increased to around 100 and participation continued to grow dramatically, reaching about 1,000 riders, on average.The name was soon adopted as a generic label by participants in similar but independent mass rides that were either initiated in various locations around the world at around the same time, or had already existed before 1992 under other names. It is estimated that there are Critical Mass-type rides in more than 325 cities to date. The term "Masser" is sometimes applied to frequent participants.

Flyer of first critical mass in Kuala Lumpur, Malaysia on July 27 2007. Around 2o+ people showed up that day!---->