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THINKING 10 tips for running effective field trials for transport interchange and terminal designs
| Date post: | 16-Nov-2014 |
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Engineering |
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10 tips for running effective field trials for transport interchange and terminal designs
Even with computer-assisted design (CAD), field trialling of vehicle facility layouts remains an important step in the design of transport terminals and passenger interchanges.
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What is the capability of a ‘real’ human driver?
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What is the capability of a ‘real’ human driver?
Swept path diagrams and bus and other vehicle models in CAD packages provide detailed guidance on the capabilities of vehicles and the space they need to manoeuvre, but…
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©JonLinkins
What is the capability of a ‘real’ human driver?
…they cannot take into account the different ways human drivers respond to design characteristics, and the movement of other vehicles.
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What is the capability of a ‘real’ human driver?
CAD operators can easily make a vehicle manoeuvre on the screen in ways which would be beyond the capability of a human driver.
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Example: CAD swept path assessment
This diagram shows unrealistic vehicle movements
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What are the risks?
Designs developed this way run the risk of failure in operation, with potential for conflicts between vehicles, and crashes.
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What are the benefits of field trialling?
Field trialling transport terminal and interchange layouts confirms and validates CAD testing
The results are fed into the design process
CAD swept path analysis and identified critical dimensions can be undertaken in confidence that they represent real work operations
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Next: 10 tips for running effective field trials
Other benefits include:
• Identification and resolution of potential design problems • Reassurance for stakeholders of the practicality of
concept designs• Identification of facility management needs• Capture of data for calibration of simulation models
What are the benefits?
What are the benefits of field trialling?
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Identify critical areas for the field trial rather than the entire transport interchange
10 tips: running effective field trials
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10 tips: running effective field trials
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Check vehicle availability – this may impact timing of field trial
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10 tips: running effective field trials
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Choose a vacant or unused site to avoid conflicting activities during the test
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10 tips: running effective field trials
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Use a combination of 3D elements such as columns and 2D markings - these elements can be important influences on driver behaviour
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10 tips: running effective field trials
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Make safety the top priority – all participants must wear personal protective equipment at all times
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10 tips: running effective field trials
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Undertake a detailed briefing for field trial participants and observers
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10 tips: running effective field trials
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Record vehicle paths using pavement paint or GPS
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10 tips: running effective field trials
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Capture vehicle movements using still or video cameras
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10 tips: running effective field trials
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Extract timing information for manoeuvres from video recordings or record using a stopwatch
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10 tips: running effective field trials
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Do a debrief to highlight trial findings / issues experienced and agree on design refinements or further testing
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Contact:Brian SmithTechnical Director – Transport+61 2 9465 5627 (Sydney)[email protected]
Mohammad IslamCivil Engineer - Transport+64 9 523 8644 (Auckland)[email protected]
For more information on transport design click here!
