...truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in ... other day and while my speedo said 38 the sign said 34 ...'re not the culprit. So why don't car manufacturers bother? I suppose ... the circumference of the wheels of cars/lorries etc aren't constant. It...It all adds up to reasons why setting speed scameras to clock anyone ...

...>Since truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in these ... the other day and while my speedo said 38 the sign said 34 so ... correct pressure so they're not the culprit. So why don't car manufacturers bother? B2003 I suppose one reason is that the ..., the circumference of the wheels of cars/lorries etc aren't constant. It ...

... truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in these...the other day and while my speedo said 38 the sign said 34 so...'re not the culprit. So why don't car manufacturers bother? C&U regulations require speedos to read to +10%% -0%% so any cost conscious car maker will make a speedo that records to +/- 5%% or something like to...

...-8e56-0fb770c968fd@m3g2000hsc.googlegroups.com... Since truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in these ... the other day and while my speedo said 38 the sign said 34 so ...correct pressure so they're not the culprit. So why don't car manufacturers bother? If they made it exactly accurate but then through a mix of tyre...

...: Since truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in these days of ...up signs the other day and while my speedo said 38 the sign said 34 so thats a...to the correct pressure so they're not the culprit. So why don't car manufacturers bother? Why do they need to be more accurate than they already are?

...>> If you have a digital speedo, then there's no reason ... be possible to calibrate each speedo by supplying specimen inputs at ... it gives an accurate reading. Do any modern cars still use ... Hall-effect sensors (like bicycle speedos) or light-and-rotating-disc ... my actual speed why doesn't the speedo? Maybe some mechanical inaccuracy within the speedo, whereas the trip computer is ...

... a digital speedo, then there's no reason why it can'... be possible to calibrate each speedo by supplying specimen inputs at ... it gives an accurate reading. Do any modern cars still use ... Hall-effect sensors (like bicycle speedos) or light-and-rotating-disc ... these days? I checked my speedo against a sign that lights...on my Mondeo between the speedo and the average speed readout...

...Since truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in these ... the other day and while my speedo said 38 the sign said 34 so ... they're not the culprit. So why don't car manufacturers bother? Because it's...? VW want to sell 8 million cars by 2011. If it cost them 10p to make a speedo read spot on rather than be inaccurate...

Since truck, bus and train speedos can be accurate why can't they do the same for cars? It can't be hard in these days of electronic everything ... flash you speed up signs the other day and while my speedo said 38 the sign said 34 so thats a good ... new and inflated to the correct pressure so they're not the culprit. So why don't car manufacturers bother? B2003

....net> wrote: Someone explained to me once that the speed shown by a GPS receiver isn't necessarliy accurate as you may be driving up or down a steep hill - the GPS will show your speed as ...will be arctan(1/3) = 18 degrees. For a hypotenuse of 1 unit (the true distance that the car travels), the horizontal distance that the GPS senses will be cos(18 degrees) = 0.95 So the ...