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It's for stop-and-go traffic, when you can't use cruise control but don't want to exceed a certain speed. And yes, more popular in places with a ton of cameras.
I find it useful where there are multiple school zones in close proximity, like the elementary school is half a block away from the middle school, and the high school is another half a block. I also live on a street where the speed limit is 35 but traffic consistently moves at 45; if you're behind me and pissed because you're going to be late for work, go two blocks west to the 45 MPH street.
I've used it in high patrolled areas where being pulled over isn't going to turn out well. Very useful, but not often used feature like a heated windshield. When you need it; you need it!
After being given a ticket for speeding on the I-5 in Washington State, the very polite officer suggested that I set the the ASL for the rest of my journey. I did.
My excuse for the excess speed was that I simply HAD to pass the convoy of Corvettes heading to an event at the LeMay Museum. The officer’s first comment, before writing the ticket, was that my XK was “a beautiful car”. He was unimpressed with my plea that my speedometer was in metric measurement (Canadian car).
I use mine on the motorway quite a bit. Near me, the motorway has been set to a fixed 50mph limit for mile after mile after mile, while they "upgrade" it. The problem isn't just fixed speed cameras, it's average speed cameras. At least with the fixed ones if you know where they are you could theoretically slow down for them. But with the average ones, your average speed is measured across a large distance and between each one so it's very easy to creep above the speed limit and average more than 50. If I drive on these roads late at night and the traffic is light I will use cruise control (I don't have ACC). If it's busy, which 99% of the time it is, you're not likely to reach 50mph but it's always possible, so I set the limiter to 50 and I don't have to stare at the speedometer. It's not unheard of to be on these sorts of roads for well over an hour so to trust the car is keeping me below 50 whilst I concentrate on not crashing into the idiots with whom I share these cramped roads is a great comfort.
If the car had ACC I would likely use it instead of ASL but there we go.
I use ACC everyday around town. As soon as I get to the urban speed limit (plus a bit) I set it then it just take a flick of my thumb to reengage it.
I have tried ASL a few times but think ACC is better. Out of curiosity I tried it again on the way home last night in my '10 XKR and after about 5 minutes the collision warning disabled itself and I couldn't turn it on again until after an ignition cycle so I won't be trying it again!
It is normally always on so I don't know what ASL did to upset it as the two things aren't really linked.
I was in Switzerland earlier this week and my cousin engaged the ASL on his car. There's so much photo radar that it's common to enable ASL to prevent going 5kph over the limit. He uses it all the time.
In the States, we haven't gone full photo radar everywhere or we'd be singing the praises of ASL.
I was in Switzerland earlier this week and my cousin engaged the ASL on his car. There's so much photo radar that it's common to enable ASL to prevent going 5kph over the limit. He uses it all the time.
In the States, we haven't gone full photo radar everywhere or we'd be singing the praises of ASL.
If there was photo radar in the US, they'd probably all get shot out in the first couple weeks.