We study how CPS technology can help improve freeway traffic by combining local car GPS positioning, traffic center control decisions, and communication to achieve more tightly coupled feedback control in intelligent speed adaptation. We develop models for an intelligent speed adaptation that respects variable speed limit control and incident management. We identify safe ranges for crucial design parameters in these systems and, using the theorem prover KeYmaera, formally verify safety of the resulting CPS models. Finally, we show how those parameter ranges can be used to decide trade-offs for practical system implementations even for design parameters that are not modeled formally. Keywords-Freeway traffic control, intelligent speed adaptation, hybrid system 2012 IEEE/ACM Third International Conference on Cyber-Physical Systems 978-0-7695-4695-7/12 $26.00
For example, the hybrid theorem prover KeyMaera can be used both for simulating and verifying models of hybrid systems, and has been used for verification of highway traffic control systems REF .
Towards Formal Verification of Freeway Traffic Control
2012 IEEE/ACM Third International Conference on Cyber-Physical Systems
2012 IEEE/ACM Third International Conference on Cyber-Physical Systems
Computer Science