Samenvatting
TRL has carried out a series of surveys on behalf of the Department for Transport into the use of mobile phones by drivers of cars and other motor vehicles, most recently in September 2005 and April 2006. The surveys were conducted at 30 sites in the South East of England that were chosen to represent the full range of conditions on British roads. They included motorways, dual carriageways and single carriageway roads and were located in towns, villages and on country roads. The single carriageway roads included A, B, C and Unclassified roads. The speed limits varied from 20mph to 70mph. (Author/publisher)