Drivesmart 65 Incorrect Speed Limits

 

After last years update to my DriveSmart 65 I noticed that some sections of roads I travel started to display incorrect speed limits. Most of these are on 55mph roads that now show as 25mph. I notice this most often after a curve in the road. I don't like this because now I can't trust what speed limit is displayed on a road I'm not familiar with. One of the things I depend upon when driving in unfamiliar areas. I originally thought that this was a corrupt map from the update and figured I'd wait for the next map update to correct this problem. Well, I updated the map again and the incorrect speed limit problem still exists.

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Four out of five Great Lakes prefer Michigan

Yep

Not unusual for some speed limits to be incorrect, they are only a guide and like all road users you need to obey the road signs rather than simply following your Garmin. You can always report incorrect ones to Garmin

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Where there's a will ... there's a way ... DriveSmart51LMT-S, DriveSmart50LMT-D, Nuvi 2508LMT-D, 1490LMT, 1310, Montana 650T, Etrex 20

Impossible!!!

not only your model. Lot of them got the same issue which is most users never mind to ask here smile

Yep we share the same momento with lovely Garmin and unspeakable if you can't trust anything in this device nor this world smile

Plus there's a lot of roads projecting wrong speed limit now, impossible to report to Garmin except they want to pay me to do it. I got lot of free time now since I quit whole ugly system to shut down human kind.

Live and learn and accept the fact and be careful on the street now.

Lot of aggressive manners and tickets just waiting for your error to pay back the system again.

Take cares and enjoy nice trip!

Speed limit updates are slow

There is a section I drive on frequently that is listed as 50 kmph on Garmin but posted at 80. I have sent in numerous error forms, even went so far on one to actually give the coordinates of the section at fault. And still, for at least ~10 years it's still wrong.
And in defence of the mapping company, Edmonton recently changed ALL of it's residential streets to 40 kmph, some to 50 and some to 60. It's hard to keep up.

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Lives in Edmonton AB A volunteer driver for Drive Happiness.ca and now (since June 20 2021) uses a DS65 to find his clients.

Similar in Waterloo Region, Ontario

Ralph6410 wrote:

There is a section I drive on frequently that is listed as 50 kmph on Garmin but posted at 80. I have sent in numerous error forms, even went so far on one to actually give the coordinates of the section at fault. And still, for at least ~10 years it's still wrong.
And in defence of the mapping company, Edmonton recently changed ALL of it's residential streets to 40 kmph, some to 50 and some to 60. It's hard to keep up.

Same issue here in Waterloo Region. Speed limits in school zones and some residential streets changed to 30 or 40 KPH.
Waterloo Region has Kitchener, Waterloo and Cambridge in it's boundaries and each does its own thing. Gets very confusing.
#0KPH is very hard to maintain a speed. the car darn near idles at that speed and some cruise controls won't set at such a slow speed.

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DriveSmart 65, NUVI2555LMT, (NUVI350 is Now Retired)

Garmin Map

From what I gather is that the map is not being kept up to date anymore. Is there another more accurate map that can be used?

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Four out of five Great Lakes prefer Michigan

That's not true.

That's not true. The Maos have been periodically updated for all he years I have owned Garmin.

Mapping data come from Here. Speed limits and such are reported by Local and State GIS entities, It would be impossible for one group of individuals to keep up with all the speed limits for every single road and highway in the US and Canada.

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Frank DriveSmart55 37.322760, -79.511267

Ok, but...

phranc wrote:

It would be impossible for one group of individuals to keep up with all the speed limits for every single road and highway in the US and Canada.

Let's not forget that Garmin has EU maps also, and Mexico, and the Islands, those require speed limits and such to be kept up also.

Are there units/map specifically for Australia, APAC countries, etc? I think so, but not sure.

In any case it's a heck of a big job for someone....

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I never get lost, but I do explore new territory every now and then.

Something is amiss.

Something is amiss. Sections of road that has for years had the correct speed limit now has changed. Most incorrect speed limits are at 25mph. Nothing has changed on these roads so there should be no changes to the data.

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Four out of five Great Lakes prefer Michigan

Run it past Garmin support

Run it past Garmin. In the 15 years I've been here, I've personally haven't had occasion to use their support but from comments here at the Factory, their support is pretty good.

Phil

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"No misfortune is so bad that whining about it won't make it worse."

That data is imported in the

That data is imported in the US. Either state, local entities have it wrong or the importing of the data is broken or the format has changed, possibly when it is merged together.

Not Just a Garmin Problem

As part of the nav system, my newer vehicles also have speed limit data displayed on the dash. It often doesn't agree with the Garmin, or the posted speed limit signs for that matter. Sometimes, there are three different speed limits to choose from.

IMO, this feature in many Garmin GPSr's is only marginally useful. It's meant to be a guide and not to be taken as gospel. As mentioned above, there is no excuse for not obeying the posted speed limits.

Speed limits

When I bought my new Garmin last year (replacing a 15 year old Nuvi), I noticed that a stretch of road that the database included an incorrect speed limit for a stretch of road that I use frequently. So I reported the error, and when the next map revision came it, it had been corrected.

Toyota "reads" signs

I recently bought a 2023 Toyota Crown. It displays speed limit signs on the speedometer panel. If you are driving within the speed limit, the sign is displayed as normal black numbers on a white sign. If you exceed the limit, the sign changes to red numbers on black.

At first I assumed it operated on a built-in data base and wondered how it would be updated, but then I noticed it would display certain other traffic signs as I approached them (ped. crossing, no U turn, etc.) After checking the user manual, I discovered that its front facing camera recognizes certain traffic signs and shows a representation of them on the dash panel.

I haven't had the car long enough to know how well this feature works. For example, I assume it will not be able to "see" the sign if you are next to a high profile vehicle like a semi trailer when you approach the sign.

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Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

changeable limit

bdhsfz6 wrote:

~snip~

IMO, this feature in many Garmin GPSr's is only marginally useful. It's meant to be a guide and not to be taken as gospel. As mentioned above, there is no excuse for not obeying the posted speed limits.

Agreed. I remember one Garmin I had allowed you to 'fix' incorrect speed limits, but even that wasn't really reliable.

For instance traveling a road where the limit changes often, whatever the last number you entered was what it would display for the entire road.

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. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

I drive down Rt 40 (60MPH)

I drive down Rt 40 (60MPH) around Raleigh, NC and my Nuvi switches between 60, 45, 50, 45,60. Now that is strange.

Auto insurance discounts

Ralph6410 wrote:

There is a section I drive on frequently that is listed as 50 kmph on Garmin but posted at 80. I have sent in numerous error forms, even went so far on one to actually give the coordinates of the section at fault. And still, for at least ~10 years it's still wrong.
And in defence of the mapping company, Edmonton recently changed ALL of it's residential streets to 40 kmph, some to 50 and some to 60. It's hard to keep up.

Auto insurance companies often offer policyholders discounted rates in exchange for being able to monitor and confirm that policyholders are driving safely, by monitoring their driving with an app or hardware device. They may say they won't raise your rates or cancel you if the monitored data says you're not driving as safely as they would want, but face it, these optional programs are most likely a double-edged sword.

One of the key factors an insurance company will look at in this regard is your speed; they know what road you're on and think they know what the speed limit is on that road. Only problem is: just like our Garmins, some portion of that speed limit data they're using has not been updated to actual posted speed limits. If they think you're frequently going 30 mph or kph over the posted speed limit, on a road you commute on daily, even though you're not actually speeding, they are not going to be happy with you. And you may not know where the problem is or how to fix it.

--
"141 could draw faster than he, but Irving was looking for 143..."

Interesting

alandb wrote:

I recently bought a 2023 Toyota Crown. It displays speed limit signs on the speedometer panel. If you are driving within the speed limit, the sign is displayed as normal black numbers on a white sign. If you exceed the limit, the sign changes to red numbers on black.

At first I assumed it operated on a built-in data base and wondered how it would be updated, but then I noticed it would display certain other traffic signs as I approached them (ped. crossing, no U turn, etc.) After checking the user manual, I discovered that its front facing camera recognizes certain traffic signs and shows a representation of them on the dash panel.

I haven't had the car long enough to know how well this feature works. For example, I assume it will not be able to "see" the sign if you are next to a high profile vehicle like a semi trailer when you approach the sign.

A great concept. I wonder if the Toyota uses both the camera and the database. That way, there would be backup for missing or unreadable signs.

For example, in PA, if there are no signs posted, the speed limit is legally set at 35 in urban areas and 55 on rural highways.

trust

Never trust the GPS to much.

Yes my 2022 Camry displays

Yes my 2022 Camry displays the speed limit signs it encounters also. For years I have been checking my speed and speed limit with one glance on my 2460 Garmin. Now since I don't trust the speed limit on the Drivesmart Garmin I now have to verify the speed limit on the dashboard. Many times the dashboard brags that the radar speed control is working so I have to wait for the brag to clear the screen so I can see the speed limit. ##!** Now I have to verify the speed limit on the Drivesmart. Something I never had to do with my Nuvi 2460 that died. I just bought a Nuvi 2797 I hope the speed limit is accurate on it like it was on the 2460. If not I'll know the problem is the map data.

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Four out of five Great Lakes prefer Michigan

Displayed speed limits

redmed wrote:

Yes my 2022 Camry displays the speed limit signs it encounters also. For years I have been checking my speed and speed limit with one glance on my 2460 Garmin. Now since I don't trust the speed limit on the Drivesmart Garmin I now have to verify the speed limit on the dashboard. Many times the dashboard brags that the radar speed control is working so I have to wait for the brag to clear the screen so I can see the speed limit. ##!** Now I have to verify the speed limit on the Drivesmart. Something I never had to do with my Nuvi 2460 that died. I just bought a Nuvi 2797 I hope the speed limit is accurate on it like it was on the 2460. If not I'll know the problem is the map data.

The speed limit data is built into the map file, and can change with each map update. All Garmin devices with the same map will display the same speed limit. I think the 2460 was one of the models that tried a tweak that allowed users to correct speed limits and I thought that was great until I tried it and found two problems. One was that when a highway had the wrong speed limit, a change would only apply for a few miles so if the error was tens of miles long, the 2460 would need multiple corrections. The other issue was that corrected speed limits were lost upon doing a map update. This "feature" disappeared with later Garmin devices.

I personally use the Garmin speed limits as a check if I'm on a road and haven't seen a speed limit sign for a while, but still look for the signs planted in the ground.

2460

CraigW wrote:

The speed limit data is built into the map file, and can change with each map update. All Garmin devices with the same map will display the same speed limit. I think the 2460 was one of the models that tried a tweak that allowed users to correct speed limits and I thought that was great until I tried it and found two problems. One was that when a highway had the wrong speed limit, a change would only apply for a few miles so if the error was tens of miles long, the 2460 would need multiple corrections. The other issue was that corrected speed limits were lost upon doing a map update. This "feature" disappeared with later Garmin devices.

I personally use the Garmin speed limits as a check if I'm on a road and haven't seen a speed limit sign for a while, but still look for the signs planted in the ground.

A previous response from me, I didn't remember a specific model at the time but I did have a 2460:

soberbyker wrote:

Agreed. I remember one Garmin I had allowed you to 'fix' incorrect speed limits, but even that wasn't really reliable.

For instance traveling a road where the limit changes often, whatever the last number you entered was what it would display for the entire road.

I tried this theory out by turning around and seeing if the many changes took, but only the last one did.

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. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

SmartDrive 65 Died

My DriveSamrt 65 just died. Will not turn on at all. 3 years old. Purchased a Drivesmart 86. Unable to transfer my personal POI from 65 at all??? Luckily had saved POIs to my PC...

charge it

sabbathman wrote:

My DriveSamrt 65 just died. Will not turn on at all. 3 years old. Purchased a Drivesmart 86. Unable to transfer my personal POI from 65 at all??? Luckily had saved POIs to my PC...

Charge the DS 65 with a wall charger for at least 4 hours. Computer USB ports do not supply enough current to do this. Also, if the computer goes to sleep, the electricity goes off.

Still Useful

Despite the inaccuracies in the reported speed limits, I still find the feature useful. Two of my Garmin GPSr's sound a chime when there is a change in the speed limit. The numbers may be incorrect but the location of the change is almost always spot on.

The chime serves as a reminder for me to check the numbers.

Other Units Too

I've noticed this on my Pioneer head unit from time to time as well and believe it or not I've even seen Waze to be incorrect a few times (less often than a PND but it has).

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Garmin: GPSIII / StreetPilot / StreetPilot Color Map / StreetPilot III / StreetPilot 2610 / GPSMAP 60CSx / Nuvi 770 / Nuvi 765T / Nuvi 3490LMT / Drivesmart 55 / GPSMAP 66st * Pioneer: AVIC-80 / N3 / X950BH / W8600NEX