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Spot Speed Study - PowerPoint PPT Presentation


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Spot Speed Study. Before anything else. Read the manual carefully. It is your homework What is covered in the following slides is just general. General. The data is to be used for assessing general speed trends and for setting speed limits.

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Presentation Transcript
before anything else
Before anything else
  • Read the manual carefully. It is your homework
  • What is covered in the following slides is just general
general
General
  • The data is to be used for assessing general speed trends and for setting speed limits.
  • The equipment for our data collection procedure is a hand-held radar.
    • Radar usage
    • Radar checkout
data collection
Data Collection
  • Name of the safety officer
  • Choose section of road
  • Not close to intersection
  • Off-peak period during daylight hours on a typical weekday
  • Hide 
  • I will contact Police to cover you
data analysis
Data analysis
  • What should you do with the collected speeds?
    • What else, statistical analysis!
  • Remember that old stuff: Mean, standard deviation,…
    • Plus a few more things
speed statistics
Speed Statistics

u = uj/N

f(ui – u)2

s =

N - 1

interpret and conclude
Interpret and conclude
  • Answer questions in manual
  • Prepare your presentation