# Traffic Engineering Problem

### #1 ghim

ghim

Intern

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• Gender:Male
• Discipline:Civil

Posted 23 October 2011 - 04:50 PM

I hope that somebody will provide me HCM reference #, table #, or anything that I can look up.

Here is a problem for the following:
On a city street, determine the peak hourly traffic volume, the peak hour factor, and how many lanes should the street have.

I solved the first two problems.
• Peak hourly traffic volume: 890 vehicles
• Peak hour factor: 0.86
My question: if I know the daily volume which is 8900 vehciles daily, how can I deteremin the number of lanes?

JK

### #2 ipswitch

ipswitch

Principal in Charge

• Senior Member
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• Location:New York
• Discipline:Structural

Posted 23 October 2011 - 06:22 PM

I hope that somebody will provide me HCM reference #, table #, or anything that I can look up.

Here is a problem for the following:
On a city street, determine the peak hourly traffic volume, the peak hour factor, and how many lanes should the street have.

I solved the first two problems.

• Peak hourly traffic volume: 890 vehicles
• Peak hour factor: 0.86
My question: if I know the daily volume which is 8900 vehciles daily, how can I deteremin the number of lanes?

JK

Peak Capacity/ (base capacity*PHF) should give you the number of lanes.

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