Acknowledgements
Extracts from British Standards are reproduced with the permission of the
British Standards Institution. BSI publications can be obtained from BSI Cus-
tomer Services, 389 Chiswick High Road, London W4 4AL, United Kingdom.
Tel.+44 (0) 20 8996 9001. Email: [email protected]Extracts from Special Report 209 of the Highway Capacity Manual (1985) are
reproduced with permission of the Transportation Research Board, National
Research Council, Washington, DC.Crown copyright material is reproduced with the permission of the Controller
of HMSO and the Queen’s Printer for Scotland.