MOBILITY AND INFRASTRUCTURE

Traffic Calming Data

A temporary speed hump on grandview avenue

Collecting vehicle volume and speed data is an integral part of our Traffic Calming Program. We collect this data using radar during the application process for traffic calming on a proposed street. If a street is selected and traffic calming measures are installed, after data is collected to determine how well the measure has performed. Please see our webpage for more information about the Neighborhood Traffic Calming Program.

If you have any questions about the Traffic Calming Program please email us at trafficcalming@pittsburghpa.gov

 

Please use this search bar to find your street or filter by the type of traffic calming by searching “Speed Humps” or “Road Diet”. You can also search for your neighborhood or council district to find out about traffic calming projects in your area. For more information about this table’s contents please see the glossary at the bottom of this page.

 

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Street Name

Project Type Median Speed
(MPH)
85th Percentile
Speed (MPH)
% of Drivers
Speeding
Average Daily
Trips (ADT)*
Location
Beechwood Boulevard
At 1750 Beechwood
Speed Humps Before: 28
After:
Change:
Before: 31
After:
Change:
Before: 70%
After:
Before: 2,740
After:
Council District 5
Squirrel Hill South
Beechwood Boulevard
At 1930 Beechwood
Speed Humps Before: 34
After: 32
Change: -2
Before: 38
After: 36
Change: -2
Before: 96%
After: 94%
Before: 5,700
After: 5,015
Council District 5
Squirrel Hill South
Beechwood Boulevard
At 2050 Beechwood
Speed Humps Before: 37
After: 25
Change: -12
Before: 32
After: 30
Change: -2
Before: 96%
After: 49%
Before: 5,140
After: 5,262
Council District 5
Squirrel Hill South
Beechwood Boulevard
At 2116 Beechwood
Speed Humps Before: 33
After:
Change:
Before: 38
After:
Change:
Before: 96%
After:
Before: 5,600
After:
Council District 5
Squirrel Hill South
Boundary Street Speed Humps Before: 30
After: 25
Change: -5
Before: 35
After: 30
Change: -5
Before: 87%
After: 47%
Before: 3,692
After: 3,776
Council District 3
Oakland
Broad Street
From East Liberty Boulevard
To Centre Avenue
Road Diet Before: 34
After: 32
Change: -2
Before: 40
After: 37
Change: -3
Before: 90%
After: 81%
Before: 8,950
After: 7,710
Council District 9
East Liberty, Larimer
Darlington Street Speed Humps Before:25
After: 19
Change: -6
Before: 30
After: 24
Change: -6
Before: 48%
After: 8%
Before:1,110
After: 570
Council District 5
Squirrel Hill South
Edmond Street Speed Humps Before: 25
After: 19
Change: -6
Before: 30
After: 24
Change: -6
Before: 45%
After: 8%
Before: 1,150
After: 870
Council District 7
Bloomfield
Frankstown Avenue
At Lincoln Avenue
Painted Bumpouts
Pedestrian Islands
Before: 30
After: 27
Change: -3
Before: 35
After: 21
Change: -3
Before: 79%
After: 64%
Before: 7,500
After: 6,794
Council District 9
Larimer
Grandview Avenue
At Kearsage Street
Temporary Speed Humps Before: 27
After: 23
Change: -3
Before: 33
After: 28
Change: -4
Before: 61%
After: 32%
Before: 3,804
After: 3507
Council District 2
Mount Washington
Heberton Street Speed Humps Before: 28
After: 24
Change: -4
Before: 33
After: 31
Change: -2
Before: 64%
After: 39%
Before: 904
After: 1,078
Council District 7
Highland Park
Jacob Street Speed Humps Before: 30
After: 23
Change: -7
Before: 35
After: 27
Change: -8
Before: 85%
After: 23%
Before: 1,767
After: 1,625
Council District 4
Brookline
Melwood Avenue Speed Humps Before: 24
After: 21
Change: -3
Before: 29
After: 26
Change: -3
Before: 40%
After: 17%
Before: 870
After: 1,200
Council District 7
Polish Hill
Saline Street
At Federal Hill Street
Speed Humps Before: 25
After: 19
Change: -6
Before: 28
After: 23
Change: -5
Before:
After: 6%
Before: 1,050
After: 1,180
Council District 5
Squirrel Hill South
Saline Street
At Lilac Street
Speed Humps Before: 26
After: 21
Change: -5
Before: 29
After: 25
Change: -4
Before:
After: 11%
Before: 975
After: 720
Council District 5
Squirrel Hill South
Webster Avenue Speed Humps Before: 27
After: 22
Change: -5
Before: 32
After: 25
Change: -7
Before: 66%
After: 15%
Before: 1,529
After: 1,532
Council District 6
Middle Hill

*Changes in average daily trips may be impacted by factors such as weather and holidays.

 

Glossary:

Street Name: This is the location of the new traffic calming measure

Project Type: This is the type of traffic calming measure that was installed, typically speed humps or a larger road diet.

  • Speed Humps: These are raised surfaces on a roadway typically installed at intervals to reduce excessive motorist speeds. They are typically 3-4 inches in height, have approach and exit ramp lengths of 2-6 feet, and may extend along a majority of the width of the roadway. Dimensions vary depending on the amount of speed reduction needed to obtain a median speed equal to the legal speed limit, or posted advisory speed limit.
  • Road Diet: This is a lane restriping project that reduces travel lane widths and/or changes lane uses. Alternate cross-sections may include the addition of dedicated left-turn lanes, on-street parking, bicycle facilities, raised medians, or sidewalks. A common application converts a four-lane, two-way roadway to a three-lane roadway – one through-lane in each direction with designated left turn lanes. The goals of a road diet project may include reducing excessive motorist speeds, maintaining the existing vehicle capacity of the street, increasing the efficiency of other modes, and increasing safety for all users.

Median Speed (MPH): This is the middle number from the recorded speeds and is different from an average because it is not weighted by the total number of vehicle trips and does not represent the most common speed.

The three numbers are the median speed before traffic calming measures were installed, after they were installed, and the difference between these two speeds.

All speeds are measured in miles per hour.

85th Percentile Speed (MPH): This is the speed that the majority (85%) of drivers traveled at or less than, this means 15% of drivers traveled faster than this speed.

The three numbers are the 85th percentile speed before traffic calming measures were installed, after they were installed, and the difference between these two speeds.

All speeds are measured in miles per hour.

% of Drivers Speeding: This is the percentage of the total number of vehicle trips traveling over the posted speed limit.

The two numbers are the percentage of drivers speeding before traffic calming measures were installed, and after they were installed.

Average Daily Trips (ADT): This is the average of the vehicle trips recorded each day, this is not the number of unique vehicles or drivers and this counts vehicles traveling in both directions.

Location: This is the Council District(s) and Neighborhood(s) where the street is located.

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