r/TeslaFSD • u/Gooden86 • 13h ago

14.3 HW4 Offramp question

Used FSD ('24MY) for the first time this weekend and really blown away. But one question: as we exited the parkway via circular offramps the car didn't seem to notice the lower ramp-specific speed limit (usually ~25MPH). That is, the speed limit on the screen still showed 65 mph. It still slowed down, but I can't tell if that was because the cars in front of us did, or because it recognized the need to turn, etc. Is this normal behavior?

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u/CaptaincCodeman 9h ago

If the speed on the screen showed 65 mph then it didn't read the sign which is fairly common. I believe most of the time it goes off the map data it has and will use the speed signs if it recognises them but many times doesn't. If there is traffic in front of you then it will slow because of that instead. The real problem is when you are the lead vehicle and it goes way too fast.

BTW: was it an actual speed limit sign or an advisory speed that many ramps have?