Black Ice
11-19-13, 01:22 PM
#51
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Black ice here in Florida is when a rain occurs on hot asphalt. The rain brings the oils from the asphalt and droppings from leaky vehicles to the surface of the pavement. This creates what we call black ice as the surface of the asphalt is as slick as ice until enough rain falls to wash clean the pavement.
Well, I've never heard that before.
11-19-13, 04:11 PM
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Studded tires on cars are illegal in the US. Apparently reducing wear on the road surface is more important than reducing accidents. They're probably illegal on bikes too but I don't really care.
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11-19-13, 04:32 PM
#53
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11-19-13, 05:03 PM
#54
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With the exception of Wisconsin and Puerto Rico and with some seasonal restrictions, they are allowed in the other 49 states, according to AAA
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11-19-13, 09:34 PM
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With the exception of Wisconsin and Puerto Rico and with some seasonal restrictions, they are allowed in the other 49 states, according to AAA
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11-19-13, 10:29 PM
#56
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It's a stud. Made of rubber. Really. They work nearly as well as carbide studs, and dont' damage the pavement. Also, modern studless snows work better than studs almost all the time. The remaining exception is icy surfaces (not snowy) when the temperature is right around freezing. Colder than about 20 F, studs don't bite ice any better than rubber, and really cold, rubber wins. That's cars and light trucks, bikes are different, because the pressures are so different.
11-20-13, 08:22 AM
#57
always rides with luggage
With the exception of Wisconsin and Puerto Rico and with some seasonal restrictions, they are allowed in the other 49 states, according to AAA
snow tires in Puerto Rico. I wonder why they are illegal there? The freezing rain...and that what this was...sucked what little heat in the pavement out and froze to the ground quickly. It would have also dropped the air temp rapidly because water has a higher heat capacity than air does. You'd have to provide a mechanism by which water near the freezing point could fall though a column of air, hit the ground and freeze without decreasing the temperature of the air column. That violates a couple of important thermodynamic laws which have never been violated before. Ever.
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11-20-13, 09:08 AM
#58
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It's a stud. Made of rubber. Really. They work nearly as well as carbide studs, and dont' damage the pavement. Also, modern studless snows work better than studs almost all the time. The remaining exception is icy surfaces (not snowy) when the temperature is right around freezing. Colder than about 20 F, studs don't bite ice any better than rubber, and really cold, rubber wins. That's cars and light trucks, bikes are different, because the pressures are so different.
Around here (Minnesota) it gets plenty cold and where I live, it's not unusual to have ice covered roads for weeks at a time. Studs (carbide) work great. Rubber does not.
J.
11-20-13, 09:29 AM
#59
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), especially the ones that are being run in July in Colorado. We allow them all year long which tears the crap out of our roads.
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Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
11-20-13, 09:57 AM
#60
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Here in PA from what I remember studded tires are only allowed Nov-April. However, my biggest complaint is not the studs, its how much UNNEEDED LIGUID SALT is put on the roads! Not only does it ruin our roads (probably more than studs) but what it does to our vehicles, and the environment. I just put studded tires on my bike yesterday as I commute in the evenig and back into the wee hours of the morning. The rolling resistance is more but I will take it!
11-20-13, 05:54 PM
#61
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The things that racers use on frozen lakes are different, with much longer spikes. They work, but destroy pavement.
11-20-13, 06:06 PM
#62
Crawler
Black Ice is a real problem for cars (out of control when you're in front of them on your bike) and I've had a few close calls on my bike too!
Anyone else have issues with black ice?
No reading comprehension fail here, the OP did ask if anyone else had "issues" with black ice, leaving the subject wide open.
Anyone else have issues with black ice?
No reading comprehension fail here, the OP did ask if anyone else had "issues" with black ice, leaving the subject wide open.
A. Studded tires.
11-20-13, 07:21 PM
#63
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You can disagree all you want. The actual performance data, though, is clear. Top quality studless tires are better, except on ice, in a very narrow range of temperatures, centered on freezing. Twenty years ago, that wasn't true, but technology has improved.
The things that racers use on frozen lakes are different, with much longer spikes. They work, but destroy pavement.
The things that racers use on frozen lakes are different, with much longer spikes. They work, but destroy pavement.
There is a difference if you have perfectly flat ice - think ice skating rink - but that isn't what icy roads or trails are like.
J.
11-22-13, 03:31 PM
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I think all of you are missing a central point to BicycleCrazy's post. Studs on your bike can make riding a bicycle in ice conditions ("black ice" is an over used term) possible. But studs do nothing for the cars that are around you. They don't even make it easier to get out of the way.
When it 'frizzles' (freezing drizzle) around here, it's time to take drive or take the bus. Being the 8 ball in a game of automobile billiards isn't good for preserving your 3rd dimension. Snow? I'll ride. Frizzle? Nope.
When it 'frizzles' (freezing drizzle) around here, it's time to take drive or take the bus. Being the 8 ball in a game of automobile billiards isn't good for preserving your 3rd dimension. Snow? I'll ride. Frizzle? Nope.
11-22-13, 04:18 PM
#65
Senior Member
This is why, during the winter, I only ride on paths that are physically segregated with something likely to stop a car that's sliding my way (curb, parked cars, ditch, etc). I just do not trust people driving 4000 pound cars to pay attention, let alone drive safely in the winter. I won't put my life in their hands.
And I put Marathon studded tyres on my bike to help protect me from me.
And I put Marathon studded tyres on my bike to help protect me from me.
