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Mid-States Highway-Rail Crossing Safety Conference Larry J. Colclasure, P.E.

Mid-States Highway-Rail Crossing Safety Conference Larry J. Colclasure, P.E. Director of Transportation Operations Texas Department of Transportation Waco District lcolclasure@dot.state.tx.us. Dallas Ft Worth. Austin. Waco District. Fort Hood. Waco. Temple Killeen. Copperas Cove.

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Mid-States Highway-Rail Crossing Safety Conference Larry J. Colclasure, P.E.

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  1. Mid-States Highway-Rail Crossing Safety Conference Larry J. Colclasure, P.E. Director of Transportation Operations Texas Department of Transportation Waco District lcolclasure@dot.state.tx.us

  2. Dallas Ft Worth Austin Waco District

  3. Fort Hood Waco Temple Killeen Copperas Cove

  4. Requires cooperation between agencies Dependent on others Catastrophic results when things don’t go according to plan Key Concerns with Preemption:

  5. Tools not available to assist. Static (factors do not change). Infrequent occurrences. Other Key Concerns with Preemption:

  6. It equals a continual relearning process and a poor understanding by many technicians and engineers.

  7. Fort Hood Waco Temple Killeen Copperas Cove

  8. Copperas Cove, Texas

  9. How to account for pedestrians. How to handle ped walk time? How to handle ped clearance time? Pedestrian Issues to Consider:

  10. How much time is needed to clear the queue? How much time is needed for track clearance green? Is preemption affected by the signal being in different phases? What is preemption delay time? Vehicular Issues to Consider:

  11. How much preemption time do I need? How much advance preemption time is needed? How much total preemption time do I have available? Railroad Issues to Consider:

  12. 0-4265 Improved Traffic Signal Operation near Railroad Grade Crossings with Active Devices 0-4746 Non-Vital Advance Rail Preemption of Signalized Intersections near Highway –Rail Grade Crossings 0-5629 Best TxDOT Practices for Signal Timing & Detection Design at Intersection Recent TxDOT Research on Preemption

  13. LADOT Preemption Form with Gate Interaction (Sean Skehan) Texas Signal Coordination Optimization [Preemption page] (Michael Pratt & James Bonneson) Recent Tools Developed:

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