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Hoylake Drive�Traffic Calming Meeting

Jake O’Bryan

Traffic Engineering Specialist

Information Gathering

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Goals For Tonight

  • Provide overview of the process
  • Discuss traffic calming tools
  • Listen and gather feedback from the community

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Why are we here?

  • Council request for traffic calming:

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    • Added to Neighborhood Traffic Management Program in 2022

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Where are we in the process?

  • Gathering Information

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Traffic Calming Scoresheet - 2025

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Scoring

  • Volume – 1330 vehicles/day 🡪 11 / 20
  • Speed – 85th percentile = 39 mph 🡪 43.5 / 45
  • Pedestrian Generators within 1/8 mile
    • Park, trail and bus stop present 🡪 0 / 10
  • Bicycle Route 🡪 5 / 5
  • School within ¼ mile 🡪 10 / 10
  • Crashes in 2023 – 2025 = 0 🡪 0 / 10
  • Total – 69.50 points

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Traffic Calming Devices

Balanced Approach

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Overly Aggressive

      • Increased Noise
      • Speed increase between devices
      • Overall street speed reduction 1-2 mph more than moderately aggressive
      • Sends traffic to other streets

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Under Aggressive

      • Little calming effect

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Traffic Calming Devices�Balanced Approach

“Just Right”

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      • Minor noise change
      • Overall street driving modification
      • Slight decrease in cut-through traffic

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Types of Traffic Calming Devices

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Vertical Calming

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Horizontal Calming

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Intersection Changes

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Vertical Traffic Calming Devices

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  • Speed humps
  • Speed tables
  • Raised crosswalks

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Speed Hump

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Speed Table (4-Way Intersection)

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Speed Table (3-Way Intersection)

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Vertical Calming

Advantages

  • Effective
  • Large area of influence when used in series
  • Minimal maintenance

Considerations

  • Unavoidable
  • May increase noise
  • Aesthetics
    • Signs and markings

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Horizontal Traffic Calming Devices

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    • Chicanes
    • Medians
    • Bulb-Outs

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Chicanes

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Median Island

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Bulb-Out

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Horizontal Calming

Advantages

  • Aesthetics
    • Can include plants or stamped concrete
  • No direct motorist interaction
  • Breaks up line of sight

Tradeoffs

  • Small area of influence
  • Costly
  • Parking Removal
  • Snow Removal
  • Loss of bike lanes

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Intersection Changes

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  • Traffic Circles / Roundabouts
  • ½ Closures
  • Right-in, right-outs

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Traffic Circle

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Right-in, Right-out

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Common Concerns

  • Emergency Vehicles
    • Preference for speed humps over alternatives

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  • Maintenance
    • Maintained on same schedule as rest of roadway

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  • Snow Removal

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Average Price of Most Common Calming Devices

  • Speed Humps ($4,000 each)
  • Speed Tables ($8,000 each)
  • Bulb-out ($25,000 each)

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What’s next?

  • Leave or send in your comments by June 19th.

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  • Second IP Meeting in Late Summer/ Early Fall

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  • Don’t Forget to
    • Sign In
    • Leave or send in a comment form

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  • Questions and comments may be directed to

Jake O’Bryan:

Jacob.obryan@como.gov

573-874-7267

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