1. 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

2. Typology DimensionLimits ContextPositiveNegative FrequencySingleRecurring Speed of OnsetFastSlow Degree of ImpactHighLow DurationShortLong DirectionCentrifugalCentripetal

3. 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

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

5. 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

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