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TTI on Topic

TTI: On Topic takes an in-depth look at one significant area of transportation research. Using TTI research projects and initiatives as a starting point, this feature provides insight into key transportation issues directly from our researchers.

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High-Occupancy Vehicle (HOV) Lanes

Featuring Katherine F. Turnbull, Ph.D., Associate Director of TTI and head of the System Planning, Policy and Environment Research Group.

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HOV Research: Introduction

A brief look at TTI’s key research initiative Into HOV lanes, and the resulting federal handbooks Focusing on that research.

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Video duration: 2:44

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HOV Eligibility

Research into the criteria used by traffic planners in identifying HOV lane candidates and by engineers in designing these routes.

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Video duration: 1:23

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HOV Safety

Research requirements for designing and constructing safe HOV facilities

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Video duration: 0:47

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HOV Monitoring

Evaluating the effectiveness of HOV initiatives.

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Video duration: 1:22

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HOV Enforcement

The options available for enforcing the rules governing HOV lane use.

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Video duration: 2:43


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