Got 2 Speeding Tickets in 7 Minutes Apart!!!! Thanks to GPS Speed Apps!

NorthStar

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Hey guys,

Today I was in a rush while driving a classic car at an 85mph area. Local laws clearly indicate that Poliscan cameras will flash as soon as you hit 91mph

Since it is a classic car, the speedometer is not accurate. So I used two GPS speed apps from the app store

The apps were indicating that my current speed is 87mph when I got hit the first time, but there was a car next to me so I thought maybe its not me!

7 minutes later, I was still doing 87 and no other car around, ANOTHER FLASH!!!

These tickets will cost me $260!

Does anyone have any idea about the margin of error in these apps? Any recommended accurate app that you guys tried before?
 

Crunchy

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Not sure on exactly how accurate they are but I wouldn’t think they would be off that much for you to get a ticket if they were both saying 87mph


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thebravo

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I find Waze is accurate in my area compared to my speedometer, but I would imagine the accuracy also depends on how many satellites you have tracking you.
 

Crunchy

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I find Waze is accurate in my area compared to my speedometer, but I would imagine the accuracy also depends on how many satellites you have tracking you.
My R3 and Waze are the same but my speedometer is 1-2 mph slower


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Transporter

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Well first off, which Apps? Some Apps are not even worth the free download. Next, where were you driving at and which direction (North, East, West, South).

My speedometer shows one speed, Wayes shows another, JBV1 App shows a third different speed, and I finally found out that only my DeLorme Mapping program on my laptop using a Garmin GPS with external antenna is the only one that shows my actual accurate speed! The speed shown by my dash cam is very close to actual speed also occasionally ticking up or down one mile per hour different then the Garmin if the two are not reading the same.

Wayes on the iPhone is on average one mile an hour below my actual speed. Wayes on the Android is usually about 2 miles an hour below my actual speed but sometimes pops way up causing an overspeed warning. My speedometer is on average 3 miles an hour slower then actual. The GPS chip or the antenna location in the DooGee Android phone sucks when I have it mounted in the landscape position.

So in the end there are several variables, the App, the quality of the GPS chip in the device, and quality and where the antenna is for said device.
.
 

Choose Life

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Countries with Poliscan are usually in Km/h not miles per hour
The country youre VPNing from is also kilometers
Confirming the general area where it happened will help alot
The only countries with 85mph limits are Poland and Bulgaria both using km/h
The only state is Texas
The rest of the world is limited to 80mph or less or has unlimited zones
 

NorthStar

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Well first off, which Apps? Some Apps are not even worth the free download. Next, where were you driving at and which direction (North, East, West, South).

My speedometer shows one speed, Wayes shows another, JBV1 App shows a third different speed, and I finally found out that only my DeLorme Mapping program on my laptop using a Garmin GPS with external antenna is the only one that shows my actual accurate speed! The speed shown by my dash cam is very close to actual speed also occasionally ticking up or down one mile per hour different then the Garmin if the two are not reading the same.

Wayes on the iPhone is on average one mile an hour below my actual speed. Wayes on the Android is usually about 2 miles an hour below my actual speed but sometimes pops way up causing an overspeed warning. My speedometer is on average 3 miles an hour slower then actual. The GPS chip or the antenna location in the DooGee Android phone sucks when I have it mounted in the landscape position.

So in the end there are several variables, the App, the quality of the GPS chip in the device, and quality and where the antenna is for said device.
.
Thanks for the useful info, but how do you know what is your true actual speed in order to decide if other apps are slower than actual or higher? I mean what is the indication that software/app/device X is giving 100% accurate speed?

Countries with Poliscan are usually in Km/h not miles per hour
The country youre VPNing from is also kilometers
Confirming the general area where it happened will help alot
The only countries with 85mph limits are Poland and Bulgaria both using km/h
The only state is Texas
The rest of the world is limited to 80mph or less or has unlimited zones
Since most people over here are from the US I did a quick conversion to mph so they better understand the situation. If you want the precise kmh numbers it was a 140kmh zone, cameras flash @ 146kmh

Regarding max speeds, I am located in the GCC at the moment. Legal max speeds here before you get hit with a ticket can reach upto 160kmh (100mph) in some highways in Abu Dhabi for example
 
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Choose Life

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Since most people over here are from the US I did a quick conversion to mph so they better understand the situation. If you want the precise kmh numbers it was a 140kmh zone, cameras flash @ 146kmh

Regarding max speeds, I am located in the GCC at the moment. Legal max speeds here before you get hit with a ticket can reach upto 160kmh (100mph) in some highways in Abu Dhabi for example
Yes we're trained from birth to ignore the middle east on a globe here in the US
It looks like Saudi arabia and most neighbors are 85mph with exceptions like you mentioned
With a 3.7mph/6kmh ticket tolerance its entirely possible the apps were off by that little tolerance
Or fluctuated
 

benzr

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Its also possible your area is using GPS jammimg equipment. Can be as cheap as $300 usd. That would thwart your wayes though. The speedo can be off by many kpmh with non std OEM Tires too !! ... and the speed goes up incrementally.




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Thanks for the useful info, but how do you know what is your true actual speed in order to decide if other apps are slower than actual or higher? I mean what is the indication that software/app/device X is giving 100% accurate speed?

There are several ways to do this especially if the ground around where one is figuring speed is mostly flat. (R)ate multiplied by (T)ime equals (D)istance so to solve for Rate, one must have a known distance and be able to track the time. If one has some flat area for a couple of miles with no curves or traffic to make one slow down, then at 60 MPH it takes exactly 60 seconds to cover a mile, so any other reading then that on ones speedometer is the offset error for Rate equals Distance divided by Time (R=D/T). The same goes for the GPS/App, one mile covered in 60 seconds should show 60MPH on the Display.

Another way it to have somebody with a private Lidar or Radar gun clock you.

Borrow a certified GPS to determine which App/Device is accurate.
 

synistyr

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There's no guarantee your speedometer is accurate either.

$0.02


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Deacon

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I have no ideas what the laws are like in your area. It’s very possible the machines themselves are set incorrectly as well. But around my area, a dash cam showing footage at the time of the encounter and your GPS-verified speed would likely result in dismissal of any resulting ticket.
 

nicholat

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I find it being off when you are changing speed, but very close at a non-changing speed
 

cbbr

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I find it being off when you are changing speed, but very close at a non-changing speed
Same here. My wheels/tires are not stock so my speedo is a little fast. The GPS in my ALPS and Waze seem to agree and I use them when I know that there are camera's. I also slow down to pad the margin.
 

Xenoo

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Waze is usually pretty accurate to my speed give or take -2/+2 sometimes.
 

DominatingDrew

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I find that GPS is very accurate and consistent across multiple devices unless there's an obvious problem with your satellite reception. I consider my GPS speed to be my "real" speed.
 
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