DACCORD
www.hcg.nl/daccord

Development and Application of
Co-ordinated Control of Corridors

Telematics Applications Programme
TRANSPORT

Table of Contents

1. Introduction and Framework

1.1 The DACCORD Project
1.2 Objectives of the DACCORD Project
1.3 Background
1.4 Objectives of Work Package 6
1.5 Objectives of Deliverable D06.3
1.6 Structure of this Deliverable

2. WP06: Co-ordinated Control for Dynamic Traffic Management

2.1 Relationship with Work Package WP04
2.2 Overview of the Control Strategies in DACCORD

2.2.1 Point, Link, and Network Level Control
2.2.2 Tactical and Strategic Approaches

2.3 The DACCORD Test Sites

3. Point Level : Motorway to Motorway control

3.1 The Paris Test Site (Appendix A)

3.1.1 Barrier Devices Modelling
3.1.2 Simulation Tests
3.1.3 Conclusion

3.2 The Amsterdam test site (Appendix B)

4. Link Level: Co-ordinated ramp metering

4.1 Co-ordinated ramp metering control by non-minimal state variable feedback (Appendix D)

4.1.1 The PIP-LQ algorithm for co-ordinated ramp metering
4.1.2 Simulation results
4.1.3 Conclusion

4.2 Co-ordinated ramp metering with METALINE (Appendix C)

5. Integrated Network level control

5.1 Brief Description of the Integrated Control Approach
5.2 OASIS Control Strategy (Appendix E)

5.2.1 Brief Test Site Description
5.2.2 Conclusions

5.3 The AMOC Control Strategy (Appendix F)
5.4 Simple Decentralised Feedback Strategies for Route Guidance in Traffic Networks (Appendix G)

6. CONCLUSIONS

7. Bibliography

8. Glossary

Appendix E: OASIS : OFF-LINE SIMULATION RESULTS

Appendix J: simulation of a routing control algorithm for motorway networks

This document is deliverable D06.3 of the Transport Telematics project DACCORD (Development and Application of Co-ordinated Control of Corridors). The DACCORD project aims to design, implement and validate a practical Dynamic Traffic Management System (DTMS) for integrated and co-ordinated control of inter-urban corridors.

The document reports on the off-line simulation work performed within Work Package WP06, Co-ordinated Control for Dynamic Traffic Management Systems.

Within DACCORD, the term co-ordinated control refers to the co-operation of the control measures within one particular category (such as ramp metering) towards a common objective, while the term integrated control refers to the co-operation of all the various traffic control measures towards a common objective.

The objective of WP06 is to develop generic, co-ordinated control tools for periurban traffic networks and to apply them to the DACCORD test sites. The control measures concerned include ramp metering, motorway-to-motorway control, VMS, VDS and route guidance.

Work Package WP06 encompasses the following three deliverables:

Deliverable D06.1 : Co-ordinated control strategies.
Deliverable D06.2 : Co-ordinated control software.
Deliverable D06.3 : Off-line simulation results.

The objective of the present deliverable D06.3, is to utilise off-line simulation tools to implement, test and evaluate the various DACCORD control strategies. These control strategies include:

	Motorway-to-motorway control.
	Co-ordinated ramp metering.
	Network level co-ordinated ramp metering.
	Advanced routing control.
	Integrated motorway network control.

The off-line simulation results are summarised in the main part of this deliverable, while full details are presented in the corresponding appendices. The contents of these appendices are discussed below:

Appendices A and B are dedicated to point control strategies and, in particular, to Motorway-To-Motorway Control (MTMC). The development of MTMC, together with an investigation of its impact on traffic at the French and Dutch test sites is described. In order to evaluate the impact of such control action on the traffic conditions of the Paris test site, variants of the well known traffic responsive ramp metering control strategy ALINEA have been implemented on the A6a entrance to the BPI using two possible control devices: signal lights and barriers.

In Appendices C and D, various centralised co-ordinated ramp metering strategies for the Amsterdam A10-West are assessed. Note that Appendix C is a EUROCOR deliverable provided for background information, while Appendix D presents the results of novel DACCORD sponsored research.

Appendices E and F discuss integrated control strategies based on non-linear optimisation. The methodology employed is generic in nature and yields both co-ordinated and integrated control strategies. In this work, the traffic flow models utilised are the METACOR and METANET simulations. The optimisation algorithm for obtaining optimal control trajectories, together with the traffic flow model, form part of generic control software tools called OASIS (Optimal Advanced control System for Integrated Strategies) and AMOC (Advanced Motorway Optimal Control). Both tools calculate optimal control trajectories for a combination of control measures (VMS and/or ramp metering and/or motorway to motorway control) for motorway networks of arbitrary topology. Note that AMOC differs from OASIS in that the latter does not include routing control.

This is followed, in Appendix G, by consideration of simple decentralised feedback strategies for route guidance, together with the associated off-line simulation results. Appendix H discusses a mock up of the BOSS system.

In version 2.0 of this documents some additional work has been included. Appendix I presents the application of METANET to the Amsterdam Motorway Network, and finally, appendix J presents the simulation results of a routing control algorithm for Motorway Networks.