Abstract
This article is especially concerned with the differences between public transport in a city and on a regional level. Differences in the nature of the transport demand have consequences for the type of public transport that is suitable. Inner city transport demand and regional or suburban traffic trip patterns differ in frequency, in the type of access or speed wanted. The author feels that in most cities the inner-city tram lines (radials with high frequency) should have priority and points to Grenoble as an excellent example. Suburban rail should in general be trains which can be lengthened and so adapted to commuting peaks. (A)