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Intelligent speed assist systems fail to read road signs 25% of the time
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Hughes-Davies1979
- Posts: 55
- Joined: Mon Feb 02, 2026 8:47 pm
Let me tell you something. The EU's GSR2 safety regulations require all new cars sold in the UK and EU to have advanced driver assistance systems, one of which is Intelligent Speed Assist (ISA). However, it turns out that ISA isn't very smart:
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Hughes-Davies1979
- Posts: 55
- Joined: Mon Feb 02, 2026 8:47 pm
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LiamTheGreat
- Posts: 116
- Joined: Mon Feb 02, 2026 8:35 pm
I appreciate that they state, "The aim is to reduce the risk of collisions and injury by helping drivers stay within speed limits." As a rationale for implementing the system, it makes sense.
While it may lessen the severity, I seriously doubt it will ever decrease the number, especially as drivers grow increasingly dependent on these systems and tend to lose focus while driving.
To be fair, the RZ outperforms its predecessor, the RX, in terms of how quickly and accurately it notifies drivers of changes to the speed limit.
While it may lessen the severity, I seriously doubt it will ever decrease the number, especially as drivers grow increasingly dependent on these systems and tend to lose focus while driving.
To be fair, the RZ outperforms its predecessor, the RX, in terms of how quickly and accurately it notifies drivers of changes to the speed limit.
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LiamTheGreat
- Posts: 116
- Joined: Mon Feb 02, 2026 8:35 pm
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zafershoukat3109
- Posts: 61
- Joined: Mon Feb 02, 2026 8:46 pm
It was yesterday that I read that very report. While ISA isn't strictly required in the UK, it is installed on our vehicles by default due to the fact that manufacturers are unwilling to create a variant without it specifically for our market.
Most implementations, as far as I can tell, just sound an alarm when you go over the speed limit; our 2019 C Class is one such vehicle. However, some, like the old MB speed limiter, may actually cut power, which could be a bit more concerning if they mess up!
It seems like these systems have been reported to occasionally detect speed limit signs, such as those found on the rear of certain heavy-duty trailers.
Most implementations, as far as I can tell, just sound an alarm when you go over the speed limit; our 2019 C Class is one such vehicle. However, some, like the old MB speed limiter, may actually cut power, which could be a bit more concerning if they mess up!
It seems like these systems have been reported to occasionally detect speed limit signs, such as those found on the rear of certain heavy-duty trailers.
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Karlsdealership
- Posts: 43
- Joined: Mon Feb 02, 2026 8:43 pm
Two eyes that never fail to function.
I believe it was I who brought up the subject of the truck.
The hardware in my previous Volvo was from a previous generation, so it would detect truck speed limit signs—usually in kilometres per hour, but the 120 ones were fascinating.
The use of Google Kit, which includes their mapping, by the newer Volvo was seamless, with the exception of a decrease in MPG.
The hardware in my previous Volvo was from a previous generation, so it would detect truck speed limit signs—usually in kilometres per hour, but the 120 ones were fascinating.
The use of Google Kit, which includes their mapping, by the newer Volvo was seamless, with the exception of a decrease in MPG.
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Edmonston33
- Posts: 80
- Joined: Mon Feb 02, 2026 8:45 pm
Until there is a universal performance standard, ADAS systems will fail to reduce accidents as intended. While some, like high-end German brands like Lexus, have functional navigation systems, many others are so obnoxious that drivers immediately disable them. Reputable road testers are now rating vehicles based on how easy it is to disable ADAS features.
For some reason, ADAS seems to be more of a formality in many cases than an actual improvement. As time goes on, I'm hoping things will get better.
For some reason, ADAS seems to be more of a formality in many cases than an actual improvement. As time goes on, I'm hoping things will get better.