30 mph speed limit for bikes?

Exactly, the law for speeding relates specifically to "motor vehicles", that's why bicycles are not covered by normal speed limits.

It's got nothing to do with the fact that bicycles don't have speedometers fitted.

Where did you get this idea from? Genuine question. I've seen this numerous times, along with the "no speedometer" claim, but have no idea where they came from. The highway code says "The 30 mph limit usually applies to all traffic on all roads with street lighting unless signs show otherwise." ( http://www.direct.gov.uk/en/TravelAndTransport/Highwaycode/DG_070304. Rule 124)

Surely "all traffic" does not apply only to motor vehicles. I've looked for specific exemptions in the cycling sections of the highway code, but can't find anything. Does anyone have the relevant section that covers speed limits for bikes, if such a section exists? Similarly, I can find no restriction for bikes at 30mph for all roads, regardless of posted limit. AFAIAA, cycles can legally travel at up to, but not in excess of, the posted speed limit, just like standard cars and motorbikes.

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