A cycle group says local authorities should not copy London’s scheme of allowing motorcycles in bus lanes.
The London Cycling Campaign says the trial should “act as a warning to other authorities” even though it has been deemed successful enough for the measure to be introduced permanently in the capital.
The group claims the scheme has delivered no safety benefits.
The criticism comes despite an 11.6% decline in cycle collisions in bus lanes during the second of two 18-month trials compared to before the measure was introduced.
LCC’s ‘road danger expert’ Charlie Lloyd said: "The overwhelming conclusion from the latest bus lane trial is, yet again, that there are no safety benefits.
"The results of this trial should act as a warning to other authorities not to risk allowing motorcycles in bus lanes."
The group’s Chief Executive Ashok Sinha added: "Cyclists and motorcyclists are both especially vulnerable to bad road policies. Transport for London's action does nothing to reduce danger for either group."