Abstract
The modular on-line model MOTION is a new approach to urban traffic signal control. It consists of a network and a local level and builds on enhanced dynamic traffic state estimation. Special consideration is given to the priorisation of public transport, which may be treated by different intervention-modes. MOTION provides possibilities for the interaction with integrated urban management systems. It is developed with support of the European Union and will be implemented in 1994 for the first time.
Highlights
HERMES is a DRIVE I1 project which focuses mainly on the enhancement and application of traffic control strategies that are based on on-line Origin/Destination information and Automatic Incident Detection
This work is to some extent based on results already achieved previously in a project study made for the SIEMENS AG [l] and in the DRIVE I project ODIN [ 2 and 31, where algorithms for the online estimation of Origins and Destinations of the major streams at single intersections and in wider urban road networks have been developed together with initial concepts for the use of this information in traffic control
Simulation results have already shown that improvements of 8% to 20% in the traffic performance are possible, if signal control schemes are based on O/D-information
Summary
The basic idea of MOTION is to combine the advantages of well designed Green Waves for the major traffic streams in a network with the flexibility of an immediate response of the local signals to the actual state of traffic. To enable this flexible control, all components of a signal program are optimised: cycle time, stage selection and sequence, offset, and split. Public transport can be given a higher weight than private transport Within these restrictions a high degree of flexibility for the local level remains. Traffic modelling and analysis calculation and optimisation of control parameters evaluation, decision, control
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