As an addendum to the gas gauge piece, speedometers also lie to you. I've calibrated mine against my sat nav and above 20mph it registers that I'm going 4mph fast than I actually am, all the way to 80mph. I believe this is deliberate so you when you are breaking the speed limit in real life, you're really breaking it on your speedo. Then you have no excuse...
Aye, friend of mine relies entirely on her SatNav speedo instead of the car one, and pretty much sticks to the exact limit on the satnav when she's somewhere she doesn't know.
There are so many margins of error built into various speed measuring systems I wonder if anyone knows what speed actual cars are normally driving.
When I'm driving through average speed camera zones, I take into account my actual speed vs. the speedometer, the shortest route through the multi-lane road vs. the route I take, the error margin built into the system as a whole and the actual speed above the speed limit that they'd likely ticket you.
I reckon that you could drive at 65mph in a 50mph zone (according to your speedo, without changing lanes on bends) before you're likely to get a ticket. In reality I'd drive at 55-60mph without concern. It's the people that drive at 45mph in the outside lane that get me :)
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
andrewducker) wrote2010-12-22 11:30 am
Gas gauges and such
Re: Gas gauges and such
There are so many margins of error built into various speed measuring systems I wonder if anyone knows what speed actual cars are normally driving.
Re: Gas gauges and such
I reckon that you could drive at 65mph in a 50mph zone (according to your speedo, without changing lanes on bends) before you're likely to get a ticket. In reality I'd drive at 55-60mph without concern. It's the people that drive at 45mph in the outside lane that get me :)