Transition through subsystem innovation? The case of traffic management

This article analyzes traffic management as an example of infrastructure operation and assesses to what extent the transition approach as developed by Rotmans, Geels, and others is helpful in providing insight and contributes to the transition of the mobility system. Based on a conceptual framework which draws on the work of Luhmann and Critical Systems Thinking (CST), two cases of traffic management innovation in the Netherlands are analyzed. From this it becomes clear that traffic management is more than the optimization of the current mobility system. Rather than being a technical exercise, traffic management has to deal with substantial uncertainty which results from political dynamics and interactions between traffic management and other parts of the larger mobility system. The cases show that, in dealing with these uncertainties, actors may start to explore broader system definitions. Thus, a transition of the car-dependent mobility system is shown to be strongly emergent, which questions overly linear projections formulated by transition researchers as well as practitioners.     

A study of urban traffic based on the temporal maps： the case of Guangzhou City

Temporal map is an isochronal map taking time as a measuring unit. It traces out the isochrones according to the discrepancy of the time distance between the different sites from the outside of the city and the down town, It can be clear and intuitional to show the different temporal relationships between the outside of the city and the city centre with the temporal map, The problem of traffic congestion, with its potential /br urban chaos, has increased dramatically with a growing number of vehicles and the continuing aerial expansion of Guangzhou. Both transit riders and drivers find it is a great difficulty to try to acquire the necessary information from urban spatial movements. Valuable time is lost due to the absence of good transportation information. So, the paper analyzes a case in Guangzhou communication with Geographic Information System （GIS）, and uses the most popular vehicles, including buses and taxis that are used to measure the temporal distance in the city. and then proposes the design of a new map that better reflects the status of urban communication, and attempts to change the relationship between one point and another potnt of travel, reducing the amount of time allocated to such. often complex, movements, This paper also points out the obstacles associated with Guangzhou＇s existing traffic congestion, and puts forward a strategy aimed at better d .efining the need of linking the temporal map to spatial map of Guangzhou.