People-focused and Near-term Public Transit Performance Analysis

Improved Public Transit Improved Public Transit

Diagnosis of near-fatal pulmonary embolus-in-transit with focused echocardiography.

BACKGROUND Among patients who die from pulmonary embolus (PE), approximately two-thirds succumb within an hour of presentation. Computed tomography can provide a definitive diagnosis but is associated with practical limitations. Echocardiography can increase diagnostic certainty of PE by visualizing signs of acute right ventricular (RV) strain. This case highlights a potentially lethal finding ...

Public Transit Labeling

We study the journey planning problem in public transit networks. Developing efficient preprocessing-based speedup techniques for this problem has been challenging: current approaches either require massive preprocessing effort or provide limited speedups. Leveraging recent advances in Hub Labeling, the fastest algorithm for road networks, we revisit the well-known time-expanded model for publi...

Transit Stops and Stations: Transit Managers’ Perspectives on Evaluating Performance Transit Stops and Stations: Transit Managers’ Perspectives on Evaluating Performance

Passengers, transit managers, adjacent businesses and residents, and local governments all can have strong, and sometimes conflicting, ideas about what makes a good transit stop or station. This paper examines stops and stations from the transit agency’s perspective; transit managers must consider both the logistical and political factors inherent to transit operations as well as the perspectiv...

Investigating Travel Behavior of Blind and Vision Impaired People: The Role of Public Transit