Abstract
Experienced judgement and specialist knowledge are essential to proper specification, understanding and Interpretation of data and computer analyses. The human expert has traditionally supplied this knowledge and judgement with the computer doing the necessary number- crunching. However, artificial Intelligence (AI) research provides- ways of embodying this knowledge and judgement within computer programs. This chapter sets out to explain some of the relevant techniques and to describe a number of situations in which transport planning and operations might be helped through their use.