On October 18th, the NYPD published new rules to govern public gathering. Here is the text of the rules change:

A "parade [or procession]" is: 1) any [march, motorcade, caravan, promenade, foot or bicycle race, or similar event of any kind,] procession or race which consists of a group of ten or more pedestrians, vehicles, bicycles or other devices moved by human power, or ridden or herded animals proceeding together upon any public street or roadway for more than two city blocks in a manner that does not comply with all applicable traffic laws, rules and regulations; or 2) any procession or race which consists of a recongnizable group of 30 or more vehicles, bicycles or other devices moved by human power, or ridden or herded animals proceeding together upon any public street or roadway

This is an amendment to Section 1. Subdivision (a) of section 19-02 of Title 38 of the Official Compilation of the Rules of the City of New York.

Summary

Put more simply here is what the new rule are:

1) Groups of 10 or more bicyclists or pedestrians who plan to travel more than two city blocks without complying with traffic laws will require a permit or be subject to arrest.

2) Groups of 30 or more bicyclists or vehicles which obey traffic laws will also require a permit or be subject to arrest.

Official Document

A copy of the posted Police Department notice of these rule changes is available here

Public Hearing

The NYPD is required to host a public hearing of this rule change. That hearing is scheduled for November 27th.