HIT: A GIS-Based Hotspot Identification Taxonomy

HIT: A GIS-Based Hotspot Identification Taxonomy

• June 1st, 2009
• in

The authors have developed a Hotspot Identification Taxonomy (HIT) that organizes the various methods for viewing hotspots. Basically they are defined as follow:

• First order – high crash frequency road segments possibly filtered for specific event(s);
• Second order – road segments defined as those that have high event counts specifically related to a countermeasure under consideration (e.g., selective enforcement for the speed event);
• Third order – segments having a high frequency of countermeasure-related events and for which the countermeasure was historically effective.

Effective use of the HIT model required four interrelated activities: data-collection, linear hotspot identification, presentation and assessment.