Originally Posted by
mr_bill
Finally, some of the first studies on sharrows took place on Mass Ave in Cambridge. Professor Peter Furth of Northeastern invented the "sharrows on steroids."
There were a lot of people involved in the development of the shared lane marking. The original "bike in a house" shared lane marking concept originated with James Mackay in Denver in the 1990s. The early 2000s shared lane marking tests in Cambridge used a variety of markings (Cara Seiderman used to be a friend of mine and we consulted frequently on the issue.) It's my recollection that the MUTCD SLM design (AKA "Corporal Bike") arose from Alta's work on the the San Francisco study, although Cambridge used it in later installations. Long Beach CA was to my knowledge the first use of the continuous green marking with SLMs, and the recent Interim Approval on green pavement in bike lanes does not extend to green backgrounds for shared lane markings - even though a number of agencies do it anyway.