You're right. Although Goffman's view of the centrality of interaction is visible in Monderman's approach to negotiating 'shared space', Chapter 7 argues that, as Foucault shows, social order tends to be specified by experts within particular historical discursive frameworks. Although both Buchanan and Monderman were important in their own right, their ideas were developed and taken up within particular contexts that 'authorised' their development (made their ideas seems appropriate and fitting to the needs of the time). Foucault claims that expert discourses, established by those with power and authority, are often disputed by competing expert discourses. Buchanan's ideas have dominated for a long period. Monderman's are perhaps gathering force and challenging those of centralised planning and direction. Foucault's view of how the authority to order social life is bound up with scientific knowledge is demonstrated in the discourses and practices of both Buchanan and Monderman.
Managing Traffic
Making Social Order
Social Interactions on the Street
How do people relate to each other in public spaces ?