Tuesday, April 26, 2016

Waze speed limit vs car speedometer. / how accurate is Waze Malaysia / Camry hybrid speedometer

Dear Camry owners

Driving the TCH is really a joy. It's so comfortable driving very fast in the Toyota Camry hybrid because it's generally quiet and refined. I seldom drove fast on the highway when driving my old rides but after getting hold of the new Camry  my average speed is now  around 130 kilometres per hour along the highway . I know this is not very fast for most drivers  in Malaysia but for me who  is more than half a century old this speed is  really fast. 
Image result for waze
Waze
Because of the new speed limit that I have acquired, there's the danger of  speed traps along the North-South highway. There are so many speed traps under the AES regime. For that reason and for other safety issues I now regularly use the Waze application when driving 'fast'. But one thing that I noticed about using the Waze gps application is that the speed warning shown by the Waze  and our own car speedometer is different. Normally, the speedometer would show the speed of the car slightly higher that the one shown by Waze
Image result for Camry 2016 speedometer Malaysia
Camry hybrid speedometer
Which speed warning do we trust? Waze or our car speedometer? For you information car manufacturers  have to  provide accurate speedometer or in most cases they would have a little optimistic speedometer. Generally  , a car speedometer is around 3~ 4 kilometers more optimistic. As such, chances are the car speedometer is less accurate.
I believe the Waze speed indicator is more accurate than the car speedometer . However, this statement comes with a caveat. This is because the Waze like other GPS instruments like Nuvi or Papago depend use satellites to calculate the speed. The accuracy of the speed is affected by a number of factors namely ~whether you are traveling on a straight line , having a clear sky and your location urban or rural where the internet access is less reliable. Therefore, for those of you who have the same confusion like me  please take note that the speedometer of your car is slightly more optimistic. 






1 comment:

  1. Apparently there is some regulation in the EU (and also the US) that mandates that the speedometer may not show any speed slower than the actual ground speed of the vehicle. So, to obey this even if the owner changes the tyres/rims or doesn't inflate the tyres to spec, the manufacturers will set the speedometer to show a higher speed.

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