September 16, 2014
This webpage contains a database developed from field testing of roads in the City of London, and South-Western Ontario. It is meant as a tool to allow the comparison of the tested roads with respect to the “good” or “bad” effects on the motion of a passenger car. The primary values used for the comparison are the lateral and longitudinal rotations of the vehicle caused by its interaction with the road surface. The columns “Lateral Motion” and “Longitudinal Motion” contain the standard deviations of the rotations of the vehicle over the tested road segment. Further details regarding the meaning and interpretation of the data can be obtained from reviewing the accompanying website article on the Articles webpage of this (www.gorskiconsulting.com) website entitled “Guidelines For Interpretation of Gorski Consulting Road Data From iPhone Testing – March 2014 Version”. The current datafiles reflect testing that has been completed up to November 11, 2017.
Three additional datafiles have been included. Two of the new files are entitled “Bridge Junction & Railway Track Data” and “Incomplete Road Repair Data”. As suggested by the titles these files contain data from driving our test vehicle over those features. Unlike most of the road data, these road features exist over very short distances therefore the displayed data capture is provided for a time of only 2 seconds. It should be obvious that data displayed beyond those 2 seconds would be rather meaningless because the vehicle’s vibration would no longer exist and would not provide a meaningful demonstration of the feature’s effect on the vehicle.
A third file entitled “Bicycle Lateral & Longitudinal Rotations – Summary Table” has been included so that the motions of our passenger vehicle can be compared to the motions of a standard, hybrid, 21-speed bicycle that was run along a paved shoulder.
To find the roadway (or feature) of interest simply click on the link relating to the geographical location of the site and then scroll down the list of roadways until you locate the roadway segment of interest. Note that roadways are listed with respect to their geographical location rather than with respect to the government agency responsible for its maintenance. Thus portions of Highway 401 are listed under “City of London” because some portions of that highway are located with the City’s boundries even though its maintenance is the responsibility of the Ontario Ministry of Transportation.
January 4, 2015: Data has been added for Eastbound Oxford County Road 18 (Norwich Road) From Highway 19 to Middletown Line. Westbound data will also be added shortly.
November 10, 2016: Data has been added for Wonderland Road south of Highway 401 in Middlesex County.
November 11, 2017: Data has been added from Medway Road between Hyde Park Road and Vanneck Road in Middlesex County.
May 15 & Jun 16, 2019: Data has been added from testing on the Lincoln Alexander Expressway and the Red Hill Valley Parkway in Hamilton.
April 29 & May 5, 2019: Data has been added from testing on Highway 401 from London to Tilbury and on Highway 402 from London to Strathroy.
October 23, 2019: Data has been added from testing on Highbury Ave from Hamilton Road to Highway 401 in London.
March 4, 2021: Data has been added from testing with an 18-passenger school bus on roads in London.
March 25 & 26, 2021: Data has been added from testing with a full-size, 70-Passenger school bus on roads in London.
March 11, 18 and 25, 2021 – Data has been added from testing of Speed Bumps in various locations in London, Ontario using an 18-Passsenger School Bus.
(Click on a link to search for road segment)
(Additions Will Be Made As New Testing Is Completed)