Exceptional Events Unusual or irregular events May have

Exceptional Events • Unusual or irregular events • May have positive or negative impacts • Positive – Special events such as the Olympics, Festivals, Holidays • Negative – Emergencies or disasters • Importance – Stress the transportation system – Consequences serious

Typology Dimension Limits Context Positive Negative Frequency Single Recurring Speed of Onset Fast Slow Degree of Impact High Low Duration Short Long Direction Centrifugal Centripetal

Data Needs • Positive impact, single events: – Stability (transferability) of experience or best practices – Significance of strategies to improve reliability of estimates • Negative impact events: – Planning versus Operations – Static versus time-dependent data

Data Tools • • • Visualization GPS tracking Cell phone tracking Automated trip planning Remote sensing Bluetooth signals

Research Needs • Understanding the population diversity • Data fusion • Visualization in SC survey – Travel behavior – Information dissemination • In-vehicle navigation • Reliability of travel time estimates • Development of dynamic data collection techniques

Collaboration With Other Research Disciplines • Opportunities for mutual benefit • Communication among agencies