Yeah, in a straight line, like driving down the freeway, your GPS is more accurate than even your car's speedo and odo. 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. Both authors list the distances of routes traveled by Alexander the Great (r. 336-323 BC) as by his bematists Diognetus and Baeton. Is so what does the software show when you make the trip in the car? It's typical for a car to leave the factory with an odometer that's 5% off. 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. I was shocked how much difference the /55 vs /50 tire made in the accuracy of my 2011 Ninja's speedo/odo accuracy. 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. Every second […] I would have to say the GPS is the most accurate, but it’s not perfect. Could this be accurate? Page 1 of 3 1 2 3 Next > Mudcat, Jun 25, 2009 #1. This is on a 05. Load is what the load is given the rider and other cargo. Possibly the first evidence for the use of an odometer can be found in the works of the ancient Roman Pliny (NH 6. 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. 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. 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. Pedometer Vs Odometer Accuracy? Now, the speedometers match very … 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. For an accurate GPS reading, your car must be on a flat, straight road. GPS Accuracy is slightly better with clear skies than with cloud cover. GPS Odometer only does one thing, and does it well: measure distance traveled. Jump to Latest Follow 1 - 3 of 3 Posts ... vs GPS my 2014 speedo is consistantly 2 mph low with new /55 PR5 tires. The second cache I completed was on flat terrain on a wide rails to trails path. Odometer accuracy vs GPS. I did adjust settings to update GPS position every second instead of default 2 seconds to make sure app keeps up with vehicle speed. It will be somewhere in the range. If the odometer is perfectly accurate with a new set of OEM tires, properly inflated. Mileage vs Mileage GPS or odometer? 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. This is of concern to hikers trying to get an accurate distance for a trail. 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 … Which is more accurate? As far as I know, you are correct in the level of accuracy for civilian GPS units (like satnavs) being lower than military applications. As I accelerate from 0 to 70 mph, the value of the difference goes … This is where another sensor comes into play: the barometric altimeter. I haven’t seen an accurate speedometer on a car yet. But even it is going to be off a … Replies: 14 Views: 2,304. I have the Track Log setup to record by Distance, at an interval of .01 miles. Includes run in background capability. I did, 1 mph off for me. Accuracy is a big difference between the bike computer and the smartphone. Total trip distance, current speed, average speed, altitude and top speed . They work very well, but you will see a difference in reading between the digital odometer reported by a GPS transponder and the odometer on the dashboard. F8L Mar 21, 2013. sammyj0r, Jul 31, 2010, in forum: Gen 3 Prius Fuel … There is often a disparity between a car's speedometer and the GPS or navigation device. https://www.mapon.com/en/blog/2020/05/difference-in-odometer-and-gps-data 61-62) and the ancient Greek Strabo (11.8.9). This has to do with the fact that the ECM reading is pulled from the GPS pings and the dashboard reading comes from calculating how many rotation a truck's tires do within 1 mile. 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. 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. 5 years ago. 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 … Police radar and GPS both agree, I'll go with that, thanks. From '14 on the … The further you sink into MPG nerdity, the sooner it will become clear that you need to know how accurate your odometer is. And if it is updating that measurement dozens of times each second, it should be accurate – … s1njin, Jan 3, 2011, in forum: Gen 3 Prius Fuel Economy. 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. With the GPS and altimeter, you can be sure of how much, and how fast you’ve gone, all from the compact display. I just notice that the mileage on my GPS is 10% higher then what my odometer says I rode. So even … Mudcat Unregistered. When I finished this one, the Trip Odometer showed 1.45 miles, while the Track Log showed 1.28 miles. 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. 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 … Digital Odometers are incorporated into some Raveon GPS transponders such as the M7-GX. Ever notice the odometer reading in your vehicle differs from the distance calculated by an online mapping provider? My concern is that at slow speeds the odometer reading on the screen of the GPS is inaccurate as explained in the blog. Features: - Accurate to within 1 … I'm glad you asked! One of the parameters the app shows is the speed difference between ECU and GPS, updating it in real time. Maybe your fuel economy is … It goes up to 3-3.5 mph when the tires are worn. GPS Speedometer and Odometer (Pro) (9 Similar Apps & 2,287 Reviews) vs DigiHUD Pro Speedometer (9 Similar Apps & 3,135 Reviews). ~J. For best results, use outdoors. What this means: For a vehicle travelling at a true speed of 100km/h, the speedo must read between 100km/h and 114km/h. 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. Odometer Accuracy. However, rain can degrade accuracy by 0.3-3.1%, with the better watches being impacted the least. Speedo is effected by tyre wear and pressure, plus the mechanical/electronic accuracy. How accurate is a GPS… Tire size is always changing - they are getting smaller as they wear. Odometer accuracy is no longer defined. The Garmin Edge is a compact and easy to use GPS computer that comes with a rugged design, made for the trails. Does it match the odometer or does it still show the discrepancy? The odometer, (and speedometer when you're at a steady speed) of your gps is much more accurate than the odometers in most cars. Ideal for almost anything that requires measuring outdoor distance traveled such as walking, running, driving, boating, hiking, horseback riding. Surprisingly, there is no federal law that regulates odometer accuracy. It's important simply because an inaccurate odometer will throw off your mileage calculations. Without one, the unit is making a ‘“best guess.” The more information required — like weight and fitness levels — the more accurate the result. My Xices were, 2-3 mph off so I wanted Tesla to adjust for it which they do but only if you pay them $2k for wheels and tires vs. $200. Note that GPS does not work well under a roof. How much of a difference and how much is … Does anyone know if this will give me an accurate distance reading? 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 … The answer is simple: although vehicle odometer readings are close to the actual mileage traveled, they are not precise. Tideland Prius Jan 9, 2011. I will be off a little bit as the tire rubber wears and in the tire pressure is not to specification. km speed test 2. I used to get near 100% agreement between CardioTrainer and both my bike's odometer … Using Google Earth to verify your odometer accuracy Posted Wednesday, April 5/06 in General. And that could result in a few extra or fewer miles. 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. However, the high accuracy of the bematists's measurements rather indicates the use … Discussion in 'GS Boxers' started by Mudcat, Jun 25, 2009. Some makes and models of car can be 10% or more- and that's before wear and tear or aftermarket tires. > @hgmichna said: If you had bothered to actually check, you would know that the Tesla speedometer is accurate." It flaunts a 1.8” that’s crisp and easy to read even during low light conditions. When this happens, the GPS has to guess to fill in the gaps. How accurate is the "miles to empty meter" ? Because it does not … 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. Relative speed over distance is used in order to calculate energy expended. If you have an ANT+ heart rate monitor paired with your odometer, this calorie count can be quite accurate. The odometer is probably more trustworthy as long as you haven't changed tire size or anything. Why is it important? 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. Joined: Jul 22, 2004 Oddometer: 4,472 Location: Bay Area. 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. Replies: 20 Views: 2,236. The bike computer will simply work using the GPS, GLONASS and anything else it has. I ended up with a speedo healer to correct it. But if you are moving at 30mph, you are covering more than 13 metres per second, which makes it possible for a satnav to measure your speed accurately. 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 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. Another thing to remember that Tire Pressure is recommended at two weight ranges. Vehicle odometer shows about the same difference between in distance travelled as trip meter; I connected a bluetooth OBDII unit to the vehicle's port and paired it with the app running on the vehicle head unit. 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