What is a collective noun for motorists?

Answer 1

There is no standard collective noun for a group of motorists, in which case a noun suitable for the situation can be used; for example, a jam of motorists, a task force of motorists, a mob of motorists, etc.

Answer 2

There is no standard collective noun for a group of bicycle riders.

A collective noun is an informal part of language, any noun that suits the context can function as a collective noun; for example, a team of bicycle riders, a stream of bicycle riders, or a throng of bicycle riders.

Answer 3

There is no standard collective noun for 'bicycle riders' (or 'cyclists'). Collective nouns are an informal part of language and any noun that suits the situation can function as a collective noun, for example, a stream of bicycle riders, a parade of cyclists, a crowd of bicycle riders, etc.