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Home > Forums > Civil / Environmental Engineers > Activities > Traffic Engineering Forum

Traffic Projection

Read More Threads Like This One

kechha2060 (Civil/Environmental)

26 Jun 12 10:13

A park with playgrounds (football, soccer, etc..) is being developed adjacent to the street I am designing. An intersection exists 1/4 mile ahead of the entrance to the park.. I am leaning towards a warrant study but my question is the traffic counts is for existing traffic and how would one project the future traffic? I am unable to obatin any design criteria from the people building the park.

IRstuff (Aerospace)

26 Jun 12 11:45

That doesn't seem to compute to me. How could they get planning commission approval for the park without such information?

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bridgebuster (Civil)

26 Jun 12 12:23

I agree with IR. You should be able to find a growth factor. Is there a local/county planning commission that can provide some general information? Do you know anyone who has done a project in that area? Or you could try your state DOT. They should have a factor that they would use for projects in that area. Keep in mind that GF's can very subjective.

I don't know if the AASHTO Green Book has any guidance on the subject. In bridge design AASHTO says assume a 3% GF for fatigue design if one isn't available.

kechha2060 (Civil/Environmental)

26 Jun 12 22:34

Will GF be sufficient? I am concerned if there is an event at the park.

bridgebuster (Civil)

27 Jun 12 7:39

If there's an event at the park that would draw a large crowd, I assume that there would be traffic control agents.

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