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Presentation | 2013

Pylon Use; A National Survey

A National Survey on Public Use in Freeways and Corridors Presentation Outline • Surveys • TxDOT Survey • Vendor Survey • National Survey • Format • Results • Interesting Findings Slide Titles Pylon Use: A National Survey Presentation Outline Survey Purpose Survey Format Terminology Vendor Interviews Survey Questions Survey Response Rate National Flexible Pylon Usage TxDOT District Pylon Usage Why Pylons Vs Barriers Other Reasons to use Pylons Pylons Vs Buffer Guidance Maintenance Reasons for Missing Pylons Maintenance Agencies Performing Evaluations Beneficial? When To Implement? Why Not Use Pylons? Conclusions • High Response Rate • Types of Applications o Managed lane/HOV applications (6). o Freeway mainlane separation (7). o U-turn/right-turn channelization (11). o Exit ramp/frontage separation (20). o Entrance/frontage separation (9). o Median applications to block left turn (5). • Why Pylons Are Used o Small Horizontal Cross Section o Low Initial Cost o Compliance with Markings o Safety • Beneficial • Issues o Inattentive Drivers o Drive Disregard o Decision Points (Entrance, Exit, Interchanges) • Not Durable Enough • Profile Markings or RPM Before Pylons • Conclusions

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Medians
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