Critical Speed at App Store analyse

App power index: 135 (based on ranks around App Stores today)
Business Utilities
Developer: Accident Analysis and Reconstruction, Inc
Price: 0 free
Current version: 1.1, last update: 7 years ago
First release : 28 Sep 2009
App size: 43.75 Kb
4.8 ( 4798 ratings )
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Estimation application downloads and cost

> 2.97k
Monthly downloads
~ $ 1.22k
Estimation App Cost


The Critical Speed Application allows the investigator to determine the critical speed of a vehicle that has entered a yawl. The speed calculations are based on the radius that is derived from the chord and middle ordinate obtained from one of the vehicle’s yawl marks, in conjunction with the drag factor and super elevation of the roadway. The application also adjusts the radius for the track width of the vehicle if so desired.

Calculations may be performed using the Imperial or Metric system. In the Imperial System the speed calculations will be displayed in both fps and mph. In the Metric System the results will be displayed in m/s and km/h.

The chord of the applicable yawl is entered into the program through the use of a text box. All other data, Middle Ordinate, Drag Factor, Super Elevation and Vehicle Track Width are entered via sliders. When any of the sliders are changed their related values change as well as all of the related calculations. This allows the user to determine the sensitivity of their data by simply moving the sliders, eliminating the need to constantly reenter data.
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Available in countries
Country Price
Canada 6.99 CAD
China 30 CNY
France 4.99 EUR
Germany 4.99 EUR
Italy 4.99 EUR
Netherlands 4.99 EUR
Portugal 4.99 EUR
Spain 4.99 EUR
Poland 4.99 EUR
UK 4.99 GBP
India 400 INR
Japan 600 JPY
Russia 379 RUB
Turkey 17.99 TRY
USA 4.99 USD
Korea, Republic Of 5.49 USD
Ukraine 4.99 USD
Available for devices
iPhoneFirstGen, iPodTouchFirstGen, iPodTouchSecondGen, iPhone3G, iPhone3GS, iPadWifi, iPad3G, iPhone4, iPodTouchThirdGen, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus,