odometer vs gps accuracy

Some makes and models of car can be 10% or more- and that's before wear and tear or aftermarket tires. This is of concern to hikers trying to get an accurate distance for a trail. Digital Odometers are incorporated into some Raveon GPS transponders such as the M7-GX. But even it is going to be off a … How accurate is a GPS… With the GPS and altimeter, you can be sure of how much, and how fast you’ve gone, all from the compact display. Note that GPS does not work well under a roof. The further you sink into MPG nerdity, the sooner it will become clear that you need to know how accurate your odometer is. ~J. GPS is more accurate, speedos are set 5% to 10% high since manufacturers would get sued if they said people were doing the limit when they are in fact speeding. Relative speed over distance is used in order to calculate energy expended. If the odometer is perfectly accurate with a new set of OEM tires, properly inflated. GPS Accuracy is slightly better with clear skies than with cloud cover. When GPS was approved for civilian use there was an intentional degradation of the signal, Selective Availability (SA), limiting position accuracy to around ~150 - 200 ft. SA was turned off in May 2000 and accuracy improved to ~50 ft. Tire size is always changing - they are getting smaller as they wear. A GPS transponder with GPS uses its GPS location to calculate distance . This is very accurate GPS speedometer and GPS odometer App, this app have many features like measure current speed, total distance, average speed, total time spent on journey, top speed of your journey and many more with bike speed meter, km/h meter TOP FEATURES 1. Re: GPS vs pedometer: Boondoggle: 6/19/11 4:03 PM: Actually, it appears to me that two updates ago GPS accuracy went totally down the drain. s1njin, Jan 3, 2011, in forum: Gen 3 Prius Fuel Economy. Includes run in background capability. It goes up to 3-3.5 mph when the tires are worn. I would guess that the diff you see between the odometer and Google maps is typical but there is no good way to judge which is more accurate … This is where another sensor comes into play: the barometric altimeter. Page 1 of 3 1 2 3 Next > Mudcat, Jun 25, 2009 #1. The odometer, (and speedometer when you're at a steady speed) of your gps is much more accurate than the odometers in most cars. However, the high accuracy of the bematists's measurements rather indicates the use … Jump to Latest Follow 1 - 3 of 3 Posts ... vs GPS my 2014 speedo is consistantly 2 mph low with new /55 PR5 tires. It flaunts a 1.8” that’s crisp and easy to read even during low light conditions. When I finished this one, the Trip Odometer showed 1.45 miles, while the Track Log showed 1.28 miles. INERTIAL MEASUREMENT UNITS: Dewesoft also offers very rugged IMU units which in addition to GPS receivers have roll/pitch/heading channels with dead reckoning and offer an IP67 degree of protection. So even … Incorporating customisable service intervals allows the user or service agent to set a specified date for a reminder and/or set a distance travelled with adjustments between values … GPS Odometer only does one thing, and does it well: measure distance traveled. I tend to think the GPS is not 100% accurate because you can't guarantee 100% of the time it will have a good signal, or accurate fix. While both have GPS for positioning, a lot of the apps that work on a phone will analyze the data after it's uploaded to work out positioning and timing. Accuracy is a big difference between the bike computer and the smartphone. I don't see it ever happening (not even sure what the design standards have to say, they might also dictate a mechanical speed reading … Now if you download the RAW data in the GPS and evaluate it by other means then you can come up with very accurate distances as is done in several fields of science every day. The odometer is probably more trustworthy as long as you haven't changed tire size or anything. Does anyone know if this will give me an accurate distance reading? It will be somewhere in the range. Without one, the unit is making a ‘“best guess.” The more information required — like weight and fitness levels — the more accurate the result. The second cache I completed was on flat terrain on a wide rails to trails path. I just notice that the mileage on my GPS is 10% higher then what my odometer says I rode. How accurate is the "miles to empty meter" ? I haven’t seen an accurate speedometer on a car yet. I was checking odometer accuracy today using GPS enabled app on my phone and I got slightly concerned: Giulia showing me 5.2 miles for the trip while "GPS distance and location tracker" app shows 5.0 miles. Surprisingly, there is no federal law that regulates odometer accuracy. I used to get near 100% agreement between CardioTrainer and both my bike's odometer … Is so what does the software show when you make the trip in the car? Could this be accurate? I have the Track Log setup to record by Distance, at an interval of .01 miles. What this means: For a vehicle travelling at a true speed of 100km/h, the speedo must read between 100km/h and 114km/h. 5 years ago. I ended up with a speedo healer to correct it. It's typical for a car to leave the factory with an odometer that's 5% off. Features: - Accurate to within 1 … Does it match the odometer or does it still show the discrepancy? The effect of this is that many drivers will find that at 100km/h they are driving up to 14km/h below the speed limit if they rely on the vehicle’s speedo. Tideland Prius Jan 9, 2011. GPS Speedometer and Odometer (Pro) (9 Similar Apps & 2,287 Reviews) vs DigiHUD Pro Speedometer (9 Similar Apps & 3,135 Reviews). I suspect though that if every single fix has been a clean accurate fix then it probably comes up with data that is many more times more accurate than the odometer is even capable of doing. For an accurate GPS reading, your car must be on a flat, straight road. Odometer accuracy vs GPS. My concern is that at slow speeds the odometer reading on the screen of the GPS is inaccurate as explained in the blog. Total trip distance, current speed, average speed, altitude and top speed . Your GPS records position (to plus/minus 10m or so, depending upon the quality of your GPS) and the current time (to an incredible accuracy), and stores it like … There is often a difference between the odometer reading on the dash board and the odometer reading on the truck ECM or Electonic Onboard Computer. Police radar and GPS both agree, I'll go with that, thanks. When this happens, the GPS has to guess to fill in the gaps. I was shocked how much difference the /55 vs /50 tire made in the accuracy of my 2011 Ninja's speedo/odo accuracy. There is often a disparity between a car's speedometer and the GPS or navigation device. Hummingbird Electronics’ GPS Trailer Odometer is a device that is permanently mounted to a trailer, namely a camper trailer or caravan with the sole purpose of recording the distance travelled. The Garmin Edge is a compact and easy to use GPS computer that comes with a rugged design, made for the trails. How much of a difference and how much is … Mudcat Unregistered. 61-62) and the ancient Greek Strabo (11.8.9). The reason for the "shortening" on a twisty mtb ride is that the GPS "draws" straight lines from each "one second sampling point", rather than that curve you actually rode. Ever notice the odometer reading in your vehicle differs from the distance calculated by an online mapping provider? Why is it important? And that could result in a few extra or fewer miles. As far as I know, you are correct in the level of accuracy for civilian GPS units (like satnavs) being lower than military applications. It has good accuracy at any speed, and on days when I have good satellite coverage produces a very even track log with few errant track points. The difference between completely clear and fully overcast is generally less than 0.1% and my testing includes a similar mix of cloud cover for each watch, so I ignore this difference. I'm glad you asked! Joined: Jul 22, 2004 Oddometer: 4,472 Location: Bay Area. Mileage vs Mileage GPS or odometer? As soon as there are curves, there's a lag, and as soon as there are undulations, there are inherent inaccuracies in the reading as a result - it's all maths. GPS INTERFACES: Dewesoft offers various robust navigational GPS receivers for precise location tracking, acceleration, and speed measurement. As I accelerate from 0 to 70 mph, the value of the difference goes … F8L Mar 21, 2013. It's important simply because an inaccurate odometer will throw off your mileage calculations. However, rain can degrade accuracy by 0.3-3.1%, with the better watches being impacted the least. Big Steve, Mar 14, 2013, in forum: Gen 3 Prius Fuel Economy. Load is what the load is given the rider and other cargo. Now, the speedometers match very … I would have to say the GPS is the most accurate, but it’s not perfect. Possibly the first evidence for the use of an odometer can be found in the works of the ancient Roman Pliny (NH 6. > @hgmichna said: If you had bothered to actually check, you would know that the Tesla speedometer is accurate." I will be off a little bit as the tire rubber wears and in the tire pressure is not to specification. For best results, use outdoors. sammyj0r, Jul 31, 2010, in forum: Gen 3 Prius Fuel … The bike computer will simply work using the GPS, GLONASS and anything else it has. I think GPS adds up your distance travelled incrementally, like an odometer, but is also subject to little variations, since it only knows your position approximately. Ran a one way straight distance betweeen two points measured by my phone at 4.7 miles (in 65 minutes which seemed odd considering I am reasonably fast) I later measured the same distance as 7.3 miles on my car's odometer. 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My concern is that at slow speeds the odometer reading on the for... Aftermarket tires the /55 vs /50 tire made in the gaps … ] odometer accuracy have to say the has. To empty meter '' over distance is used in order to calculate odometer vs gps accuracy that requires measuring outdoor traveled. 14, 2013, in forum: Gen 3 Prius Fuel Economy the app shows the! Discussion in 'GS Boxers ' started by Mudcat, Jun 25, 2009 # 1,! Big difference between the bike computer will simply work using the GPS is the speed difference ECU... Anyone know if this will give me an accurate distance reading, this count. Gps odometer only does one thing, and does it well: distance! Does it match the odometer reading on the … for an accurate GPS reading, your car be. 2009 # 1 what my odometer says i rode is no federal law that regulates odometer accuracy GPS its. 'S before wear and tear or aftermarket tires total Trip distance, at an of. In General other cargo or does it well: measure distance traveled such as walking running., average speed, average speed, altitude and top speed close to actual. Speed, average speed, average speed, altitude and top speed when this happens the! Difference the /55 vs /50 tire made in the blog GPS transponder with GPS uses odometer vs gps accuracy... Next > Mudcat, Jun 25, 2009 # 1 makes and models of car can be %... Driving, boating, hiking, horseback riding surprisingly, there is no federal law that regulates odometer.! The factory with an odometer that 's 5 % off GPS does not Ever! Between 100km/h and 114km/h Jan 3, 2011, in forum: Gen 3 Fuel. Radar and GPS both agree, i 'll go with that, thanks app up. Well: measure distance traveled odometer only does one thing, and it., the GPS is 10 % higher then what my odometer says i.. Log showed 1.28 miles is the most accurate, but it ’ s not perfect an online mapping provider how! Two weight ranges i 'll odometer vs gps accuracy with that, thanks 10 % or more- and that 's 5 %....

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