Road design

Cover of Heavy Vehicle Sight Distance Requirements at Rail Crossings (Stage 2)
Heavy Vehicle Sight Distance Requirements at Rail Crossings (Stage 2)
  • Publication no: AP-R347-09
  • ISBN: 978-1-921551-94-9
  • Published: 9 November 2009

Passive control railway level crossings within the road network pose a significant safety issue, both for trains and multi-combination vehicles (MCVs) and restricted access vehicles (RAVs0. In order to have provision for the larger MCVs and RAVs, further testing and simulations were required to be performed on a range of characteristic heavy vehicle combinations.

Field testing of two new innovative vehicle combinations, a pocket road train and a B-triple, was carried out and the performance data collected was used to validate simulations. Simulated stopping distances, acceleration clearance times and sight distances are included in Section 3 for the list of subject (characteristic) vehicles on a range of grades, from a range of different initial vehicle speeds, for a range of train speeds. These results were compared with AS 1742.7 (2007).

  • Project Manager
  • 1. INTRODUCTION
  • 2. METHOD
    • 2.1. Experimental Procedure
    • 2.2. Crossings Protected by Give-way Signs – Approach Visibility
      • 2.2.1. Field Testing Observations
      • 2.2.2. Simulation Validation
    • 2.3. Crossings Protected by Stop Signs – Crossing Visibility
      • 2.3.1. Field Testing Observations
      • 2.3.2. Simulation Validation
  • 3. RESULTS AND DISCUSSION
    • 3.1. Crossings Protected by Give-way Signs – Approach Visibility
      • 3.1.1. Stopping and Sight Distance Results
      • 3.1.2. Comparison with Australian Standard AS 1742.7-2007
      • 3.1.3. Effect of Grade
    • 3.2. Crossings Protected by Stop Signs – Crossing Visibility
      • 3.2.1. Clearance Time and Sight Distance Results
      • 3.2.2. Comparison with Australian Standard AS 1742.7-2007
      • 3.2.3. Effect of Grade
    • 3.3. Drivers’ View of Approaching Trains
      • 3.3.1. Drivers’ Perception of Train Speed
      • 3.3.2. The View from the Cab
  • 4. CONCLUSIONS
  • REFERENCES