M4 Bus And Taxi Lane Lord Vivian asked Her Majesty's Government:When they intend to publish the trial results for the M.4 bus and taxi lane. [HL944] Lord Whitty The M.4 bus lane pilot scheme is being independently monitored by the Transport Research Laboratory. Details of the performance of the scheme during the first three months' operation of the bus lane were published last November by the Highways Agency and a copy has been placed in the Library of the House. The results show that all vehicles benefited by reduced average journey times. Subsequent monitoring is showing that these benefits are continuing.The detailed monitoring by TRL is continuing. Further results will be released from time to time.It is too early to provide details of the effect of the scheme on accidents, but the police who patrol the motorway consider it is now safer.