THIS SURVEY IS NOW CLOSED however this page will remain online until Spring 2013 to provide contact details for those interested in this issue. The MULTITUDE project hopes to undertake a number of Simulation guideline seminars around Europe in spring/summer 2013 and results from the survey will be made public in the Autumn on the project website and summary presentations made at a number of committee meetings at the 2013 TRB Annual Conference. Those interested should contact Mark Brackstone at mb1v11@soton.ac.uk