The colloquium „Luftqualität an Straßen“ will take place on 30 and 31 March 2011 at BASt (German Federal Highway Research Institute) in Bergisch Gladbach. Deadline for abstracts is 17 Sept 2010. See http://www.fgsv.de/209.html?&tx_ttnews%5Btt_news%5D=116&cHash=3c2c153bde for details.