Towing with cruise control, bad idea? - Page 4 - Fiberglass RV


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Old 01-06-2015, 09:11 PM   #43
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Originally Posted by frank_a View Post
How does one know what states have traffic laws like that (55 towing a trailer?!?) Are there signs at the interstate entrances? Do laws like that apply to tractor trailers as well? If it doesn't, it should!

I commute on an interstate every day. Tractor trailers are the bane of my existence!

Frank
Well Frank, here in Ca there are speed signs posted along the freeways; autos/trucks with trailers 55. But you sure don't see it observed much.
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Old 01-07-2015, 09:05 AM   #44
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Well Frank, here in Ca there are speed signs posted along the freeways; autos/trucks with trailers 55. But you sure don't see it observed much.

I've noticed that, too. Trailering speed limits seem routinely ignored in CA.

I regularly drive I-10 between Phoenix and LA, with and without a trailer, and here's what I have noticed. On the AZ side, where everyone can go 75mph if they want, surprisingly few go that fast with trucks and RVs typically averaging about 65mph. On the CA side, where trucks and RVs are limited to 55mph, they still go about 65mph.

If you want to experience what happens when a truck going 56 pulls into a lane of passenger vehicles trying to go 65 in order to pass another truck going 54, just drive the Central Valley from Bakersfield to Fresno!
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Old 01-07-2015, 09:56 AM   #45
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Love cruise control. Towing at a steady 55 in the granny lane on I-40E after crossing into AZ I once got seriously cut off by a small truck. Guessing he owned oil stocks.
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Old 01-07-2015, 10:57 AM   #46
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Hi Pat, Yes manually tapping the brakes does deactivate the cruise control, but when cruise is on and the driver does not manually use the brakes the cruise control will still slow the vehicle by applying the rear brakes and that does not trigger the trailer brakes.
I've never even heard of such a thing, could you please explain what vehicle does this, or what specific system.
I suspect that you may be referring to some of the new systems which control following distance. VW calls it (ACC) automatic distance control, an additional automotive function far enough removed from cruise control to warrant separate nomenclature.
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Old 01-07-2015, 11:45 AM   #47
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Well Frank, here in Ca there are speed signs posted along the freeways; autos/trucks with trailers 55. But you sure don't see it observed much.
Then there was the time in the 1960’s I was pulling a U-Haul up I-5 through the Sacramento area. I believe the speed limits at the time were 60 mph for cars and 55 mph when towing. We were coming for the LA area, had been on the road for several hours and were getting tired so I was going to look for a motel. As I pulled off the freeway I noticed the Highway Patrol was right behind me. Once off the exit ramp on came that dreaded bubblegum light; I was ticketed for going 5 mph over the speed limit for trailers.

But that was back in the dark ages.
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Old 01-07-2015, 01:37 PM   #48
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FWIW and reading the owner's guide, Ford’s system is called adaptive cruise control. It is an optional upgrade from "plain" cruise control. It does apply brakes/close/ease the throttle according to some algorithm when the “gap” you set is violated. Until that gap warning is invoked, no autonomous brake application. In other words, if you changed to a clear lane before the gap was violated there would be no braking. Without the "adaptive" option, no autonomous braking at all.
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Old 01-07-2015, 04:55 PM   #49
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FWIW and reading the owner's guide, Ford’s system is called adaptive cruise control. It is an optional upgrade from "plain" cruise control. It does apply brakes/close/ease the throttle according to some algorithm when the “gap” you set is violated. Until that gap warning is invoked, no autonomous brake application. In other words, if you changed to a clear lane before the gap was violated there would be no braking. Without the "adaptive" option, no autonomous braking at all.
Subaru also calls it adaptive cruise control on my Outback. Love it. The stereo cameras pick up a leading car/truck seemingly at about 250 feet. Sorry, its difficult to measure. You can set 3 or 4 preset following distances. I use 190 feet, the longest available. The system seems to measure the relative closing speed and retards the throttle and even brakes if the cars are closing too rapidly. If you pull into another lane your original speed is returned. BTW the system also brakes if you encounter a pedestrian, brick wall or stopped vehicle. Haven't tried out that feature; really hope never to.

Cheers, john
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Old 01-07-2015, 06:10 PM   #50
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What's it do if someone were to pull into the lane in front of you, halving the distance to the vehicle in front of you. At 190' this would happen all the time in rush hour traffic around here.
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Old 01-07-2015, 07:25 PM   #51
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What's it do if someone were to pull into the lane in front of you, halving the distance to the vehicle in front of you. At 190' this would happen all the time in rush hour traffic around here.

Good question but who would be using CC in rush hour traffic ? That's a person I want to be on a different road from
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Old 01-07-2015, 09:04 PM   #52
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What's it do if someone were to pull into the lane in front of you, halving the distance to the vehicle in front of you. At 190' this would happen all the time in rush hour traffic around here.
When someone pulls in front the computer makes a determination of the relative speed. If the car in front is substantially slower it cuts the throttle and may even brake. If both cars are moving at similar speed it is patient in widening the distance; my speed may not even decrease. Still I keep attentive. I enjoy computers and tech but machines do break and some even get viruses. They say self-driving cars are ready to roll; it's just that the public isn't ready. I for one am not ready.
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Old 01-08-2015, 02:26 AM   #53
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Then maybe you could drive at rush hour with the ACC on, nice.

Heck, soon we won't have to call a cab for a ride home after the company Christmas party. Of course that would mean I'd have to still be working for a company. Guess just having it back the trailer in between the garage and the fence will have to do.
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Old 01-08-2015, 08:42 AM   #54
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...They say self-driving cars are ready to roll; it's just that the public isn't ready. I for one am not ready.
There are so many people now who text, read, apply makeup, drink alcohol, etc while driving. It would be a lot safer for them and everyone else on the road if those people's cars were self-driving.
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Old 01-08-2015, 03:17 PM   #55
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There are so many people now who text, read, apply makeup, drink alcohol, etc while driving. It would be a lot safer for them and everyone else on the road if those people's cars were self-driving.
Only until these "self aware" cars start primping and texting and trying to avoid dirt or salt,or applying wax while driving.
Heck they already steadily sip a 10.0% or higher fluid alcohol content while driving, And that's not counting the hard stuff ( E-85 flexfuel)
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Old 01-09-2015, 03:41 PM   #56
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Only until these "self aware" cars start primping and texting and trying to avoid dirt or salt,or applying wax while driving.
Heck they already steadily sip a 10.0% or higher fluid alcohol content while driving, And that's not counting the hard stuff ( E-85 flexfuel)

Good one, Floyd. Don't care personally if it drives itself but I want one of those self-waxing models!


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