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I've been contemplating buying a new car. BYD are a popular brand for electric cars in Australia. A single titbit in a review turned me off[1]. > To start wi

I've been contemplating buying a new car. BYD are a popular brand for electric cars in Australia. A single titbit in a review turned me off[1]. > To start with, the Dolphin falls victim to a speed limit warning system with no tolerance and a chiding beep that will quickly drive you insane. The car has cameras to read speed signs and if it detects you are speeding beep at you. Sounds like a great feature! What's the problem if you aren't speeding? > To make matters worse, the Dolphin is equipped with equally flawed traffic sign recognition technology that takes all speed limit signs at face value, ignoring the time stipulations common in school zones and busy shopping hubs. Oh ... we have some speed signs that have time qualifiers, eg lower speeds around schools near start and end of school, or busy shops etc. > It’s one thing to have a car bother you for breaking the speed limit, but another altogether for a car to unnecessarily distract you during safe, lawful driving. Rant over… for now. > You can switch the system off, just not permanently. Settings revert to their default state every time you switch the car off, so setting up ADAS becomes a time-consuming daily ritual. Absence of a feature is often far superior to a broken one. [1] https://www.carexpert.com.au/car-reviews/2025-byd-dolphin-review https://www.carexpert.com.au/car-reviews/2025-byd-dolphin-re...

roelschroeven 2y ago
> The car has cameras to read speed signs and if it detects you are speeding beep at you. Sounds like a great feature! What's the problem if you aren't speeding? If it's anything like the speed limit warning system in my Volvo, it's utterly useless. It gets the speed limit right about 80% of the time I would say. The other 20% it sees a sign "max 5 ton allowed" and thinks it means "max 5 kph", or it sees a sign in a side street and thinks it applies on the main street. Or a speed limit ends at a crossroad, which the system doesn't understand. The system often thinks the speed limit is 30 kph where it's actually 50 kph which is annoying; sometimes it thinks the limit is 90 or even 120 where it's only 50 or 70 which is outright dangerous. The system is not to be trusted at all. There suggestions to make laws that would require cars to enforce these limits, instead of just showing the limits and warnings. I'm not against that in principle, but those systems need to get a lot better than the one in my Volvo first.

roelschroeven 2y ago

> The car has cameras to read speed signs and if it detects you are speeding beep at you. Sounds like a great feature! What's the problem if you aren't speeding? If it's anything like the speed limit warning system in my Volvo, it's utterly useless. It gets the speed limit right about 80% of the time I would say. The other 20% it sees a sign "max 5 ton allowed" and thinks it means "max 5 kph", or it sees a sign in a side street and thinks it applies on the main street. Or a speed limit ends at a crossroad, which the system doesn't understand. The system often thinks the speed limit is 30 kph where it's actually 50 kph which is annoying; sometimes it thinks the limit is 90 or even 120 where it's only 50 or 70 which is outright dangerous. The system is not to be trusted at all. There suggestions to make laws that would require cars to enforce these limits, instead of just showing the limits and warnings. I'm not against that in principle, but those systems need to get a lot better than the one in my Volvo first.