Editorial

As usual, these comprise a range of ITS applications. There are two papers on Vehicular Adhoc Networks (VANETs) which seems to be an increasingly `hot¿ topic. Maziar Nekovee presents a new algorithm for reliable and efficient information dissemination and Rohan Goonewardene and colleagues propose a new robust adaptive clustering scheme. Then there is a paper from my colleague Nicholas Taylor of TRL on the traffic and congestion effects of moving abnormal loads on the road network. Next, Michael Schneider and colleagues discuss the suitability of toll collection data as a source of traveller information on main roads in Austria. The following paper from Xiao-Yun Lu and Samer Madanat from Berkeley shows how environmental factors can and should be taken into account in recommending a following distance or warning of a too close approach. Finally, Jun Ho and colleagues from Imperial complete this section with a paper on spatial econometric models to enhance route guidance systems by congestion prediction.