GPS Speed Limiting a Thing?

• 

  Look Up on 21/12/2023 - 17:47

  +1

  Is it a thing?

  Yes

  How would that work?

  Car obeys the GPS speed limit, subject to manual override (if available)

  Same behaviour with the opposite situation eg. temporary lower speed limit due to road works

  • 

    Euphemistic on 21/12/2023 - 18:00

    Car obeys the GPS speed limit, subject to manual override (if available)

    If it can’t exceed the speed limit …. Wouldn’t it not allow you to exceed the limit?

    Local road had a glitch in the maps I was using and would have meant the car slowed me to 50 in a 70 zone. Not a safe thing to do.

    • 

      AustriaBargain on 21/12/2023 - 19:31

      +2

      Then activate the manual override and the manger can look at the footage from the dash cam that was recorded when the override was enabled if they want an explanation of why you were going 120 in a zone the device thought should be 50. But if you went 140 in a 110 zone in SA and the manager looked at the footage and saw no reason for speeding, even if everyone else was speeding, then you risk being fired.

  • 

    simplystu on 21/12/2023 - 20:46

    +1

    hate to imagine how that would go through the multitude of tunnels ???

    "GPS signal lost" - think many many drivers can relate to that.

    Although (some tunnels) - were looking at implementing GPS repeaters (just something I read on another forum) … but no real hard evidence to say it is currently inplace.

• 

  El cheepo on 21/12/2023 - 19:12

  +3

  I would say most companies with writing to that effect are suggesting the vehicles are monitored 24/7 and any speeding is automatically reported.

  Many minesite vehicles are fitted with similar systems as well as auto reporting systems for rough driving and not wearing seatbelts etc.

  • 

    Euphemistic on 21/12/2023 - 19:24

    Makes sense to log and report. I’ve seen plenty of “GPS monitored for safety” signs. I just hadn’t heard of actual limiting happening and wondered if anyone had experience of having a speed limited vehicle and how it worked.

    • 

      El cheepo on 22/12/2023 - 00:13

      All trucks and vehicles over 15 ton (some states and territories its 12ton) have to be electronically speed limited to a maximum of 100kmph.

      Its just software built in to the vehicle.

      If its in a car it more then likely uses a similar principle with some other basic mapping features.
      Can’t imagine it physically would slow/stop someone from speeding. More likely just notify their boss.

• 

  GordonD on 21/12/2023 - 19:57

  Newly introduced models in the EU were required from last year to be fitted with intelligent speed "assistance". Cars coming here that were built there may have it. Clearly a RAV4 doesn't come from there.

  ISA uses GPS and/or cameras looking at speed signs to decide what the speed limit is, and if you try to exceed that speed they nag you. You get an audible warning, a display of what the limit is, warning vibrations, or the accelerator requires you to use extra pressure.

  The problem with it is the same as with all the driver assistance devices they've required in recent year. It gets it wrong a lot. The camera misses a sign and keeps thinking the limit is what the previous one said. Often happens with vegetation obscuring a sign, or another vehicle being between the camera and the sign, or the sign being knocked down. Or the speed limit is now different to what the database the GPS location is looked up in says. That's the trouble with databases, they have to be continually updated every time a speed limit changes permanently or temporarily.

  So people turn them off.

  So they turn themselves back on when you restart the car the next time.

  Large percentages of drivers think lane keeping assistance and lane change warning and intelligent speed assistance are just annoying.

  • 

    spackbace on 21/12/2023 - 20:01

    Most Toyota's these days have speed sign detection, which typically just lights up when you go over the speed but can be set to beep.

    Not the most accurate though, as you pointed out. Sometimes pick up on off-ramp speed signs etc

    • 

      GordonD on 21/12/2023 - 20:28

      Worked on an alarm system some years ago. No one thought to specify what level of accuracy it needed to achieve. We found that it only takes a relatively small number of false alarms for the users to assume its wrong again, its another false alarm, every time it generates an alarm.

    • 

      Euphemistic on 21/12/2023 - 20:49

      My Isuzu has picked up off ramp signs plenty of times. It’s also occasionally picked up the 40 sign on the back of a school bus. It not good enough to have it control the driving speed.

      since I’ve set it to ‘no beep’ it only flashes the display. Most of the time it’s just handy to have a look and see what the last sign said.

      • 

        singlemalt72 on 22/12/2023 - 09:15

        These systems do not use the speed sign camera for attenuating the speed, they use GPS, the camera system is simply an advisory for the driver.

    • 

      RockyRaccoon on 21/12/2023 - 21:11

      Well mine just tells me to "please obey…. "

      But here many speed signs are partially obscured, just one indication of the inability of council to maintain the roads

      • 

        spackbace on 21/12/2023 - 21:38

        Easy enough to disable that voice speed warning. I usually just set it to speeding in school zones only

• 

  pegaxs on 21/12/2023 - 21:57

  +3

  In one of our work vehicles, we have a trial camera set up that plugs into the OBD port and has GPS and 4G connection.

  While it doesn’t activate any safety systems in the car, it will beep its head off if you go over the limit and the boss gets an email/message/app warning that the vehicle is speeding (it also gives warning for harsh acceleration and braking among other things). If it senses anything, it dobs on the driver, take a video and overlays all the vehicle telemetry over the video and sends it to the app for the boss to view…

  Needless to say, no one like driving this vehicle at work. It has done about 3000km in the last 12 months. The guys would rather drive the busted arse 20yo hilux than the 18 month old one.

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  solidussnake on 22/12/2023 - 07:18

  +2

  My works Gov fleet all have 4g modules plugged into the OBD ports and we use a service called Log Book Me, we had similar stickers made but didn't put them on as the cars can exceed the limit but will track speeding hard braking etc.i think only trucks are speed limited but not vehicles