The purpose of mode transfer is to create conditions that foster greater use of public transport (modal shift) to counter increased traffic volumes and congestion during rush hours, or following a major capacity reduction over an extended period (with risk of major daily traffic jams over several months). Both situations can lead to an acute drop in road network service levels due to a lack of roadway capacity.
The measure is attractive:
Mode transfer incentives can also be used in response to other situations such as poor air quality and a forcast increase in air pollution.
The objective is to promote greater use of public transport in order to reduce the number of vehicles on the road. A common approach is the use of information to the user in real-time on public transport services and on the existence of multi-modal journey transfer points, such as "park-and-ride". (See Transportation Demand Management) This is done through journey planning websites, and in real-time with VMS or in-vehicle information devices (conventional broadcasting, RDS-TMC, route guidance systems). (See En-Route Information)
The anticipated problems (for example daily traffic jams, or lengthy delays) must be well-publicised in advance or braodcast in real-time through travel aid and user information measures (VMS or in-vehicle equipment, smart-phone text messages and social media).
Car pooling or use of public transportation can be encouraged by upgrading the service frequency and capacity, especially during rush hours.
This measure requires preparation involving all partners starting several months before the planned disruptions are scheduled. (See Traffic Management Plans) It is implemented in the following stages:
Publicity need to convincing and persuasive enough to overcome reluctance and rigidity in the response of road users. Success also depends on:
Different strategies are needed to achieve a mode transfer for freight. Integrating actions on freight management. This may be seen as a long-term measure within the road network operations strategy. particularly when the aim is to shift goods off the road amd onto other modes. (See Users and the Delivery Process)