Bunch riding in Centennial Park Sydney restricts cyclists to 'no more than 16 in a bunch' and 'not riding less than 3 metres (just under two bicycle lengths) from the rear wheel of the bicycle ahead'

See below extract from 'Park Rules and Regulations':

Cycling and Rollerblading

A 3.8 kilometre cycling and rollerblading track follows the perimeter of Grand Drive, Centennial Park.

Please note the following:

• Cyclists must observe the 30 km per hour speed limit, wear helmets and follow one-way traffic directions.
• Cyclists are not permitted to ride in packs of more than 16 and closer than 3 metres.
• Bicycle racing is prohibited, unless specifically approved by the Trust.
• Adult cyclists and rollerbladers are not allowed on the Learner’s Cycleway.
• All cyclists must wear a safety-approved helmet at all times.
• Rollerbladers are not permitted on the Grand Drive footpath in Centennial Park.
• Three-wheel pedal cars are not allowed in Centennial Park. Four-wheel pedal cars are permitted. Pedal cars are prohibited in the Parklands except on Grand Drive cycle path.

The above information is paraphrased from the Centennial Park and Moore Park Trust Regulation 2009. For the full text and the Regulation in its entirety, visit the NSW Legislation website.