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  1. #1
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    Gradient % Signs

    I was just doing some research on climbing hills and this poster was from the UK. Apparently they have signs there that tell the rider the gradient of the hill. Do other people have these in their neck of the woods? Are these anywhere in the states?

    I'm kind of jealous, I'm thinking of petitioning the state department of transportation to implement these. Might start by contacting the Mo Bike Fed, but I need to find out if these are actually anywhere in my state of MO or anywhere in the states for that matter.
    First God made the fixie, then he made the freewheel because he was tired of pedaling.

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    I've only seen one sign that actually listed the gradient % (11). I've seen plenty of signs that have a picture of a truck on the side of a triangle though.

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    Lots of mountainous areas have gradient signs up for trucks... doubt that cyclists are high on the list. Take what you can get.

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    Buy a cheap "inclinometer" and you can see this in real time. I enjoy mine on the big hills.

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    Long Distance Cyclist Machka's Avatar
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    If you have a look through the Photo Threads, you'll see several of bicycles with mountains, scenic climbs, and two threads entitled ...

    "Your bike with a percentage of grade sign/Photos of your bike next to % grade signs"


    http://www.bikeforums.net/showthread...-Photo-Threads



    And yes, many places list the % on signs, but usually only if it is more than 8%.

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    Gradient signs are pretty common on mountain highways in the USA (at least in the western USA where there are real mountains). They are used to tell truck drivers what to expect, especially when going downhill.

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    Senior Member Fiery's Avatar
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    There are some on longer/steeper climbs, but a lot of them seem to overestimate the gradient by a fair amount.

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    Missouri has hills? Show me.

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    Quote Originally Posted by Fiery View Post
    There are some on longer/steeper climbs, but a lot of
    them seem to overestimate the gradient by a fair amount.
    Hi,

    That is because they indicate the maximum slope,
    not the average, of the incline being indicated.

    rgds, sreten.

  10. #10
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by kenji666 View Post
    Missouri has hills? Show me.
    You'll have to come to Missouri, at least once, for us to show you.

  11. #11
    Team ABC Cycles Chris R.'s Avatar
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    We have them in Canada...
    [SIGPIC][/SIGPIC]

  12. #12
    2 Fat 2 Furious contango's Avatar
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    Quote Originally Posted by Mr_Wrench View Post
    I was just doing some research on climbing hills and this poster was from the UK. Apparently they have signs there that tell the rider the gradient of the hill. Do other people have these in their neck of the woods? Are these anywhere in the states?

    I'm kind of jealous, I'm thinking of petitioning the state department of transportation to implement these. Might start by contacting the Mo Bike Fed, but I need to find out if these are actually anywhere in my state of MO or anywhere in the states for that matter.
    Seen a few of those in the US and the UK. Like this:

    https://maps.google.com/?ll=40.71454...29.49,,0,-0.88

    And these, spaced fairly close together along a hill that gets steeper...
    https://maps.google.com/maps?ll=51.2...58.73,,0,12.51
    https://maps.google.com/maps?ll=51.2...,48.9,,0,10.41
    https://maps.google.com/maps?ll=51.2...,32.47,,0,7.54
    https://maps.google.com/maps?ll=51.2...38.81,,0,15.42
    "For a list of ways technology has failed to improve quality of life, press three"

  13. #13
    Old fart JohnDThompson's Avatar
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    Quote Originally Posted by Xherion View Post
    I've only seen one sign that actually listed the gradient % (11). I've seen plenty of signs that have a picture of a truck on the side of a triangle though.
    Near Grand Tetons in Wyoming:


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  15. #15
    Senior Member digibud's Avatar
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    24% . Holy crap. That's one hill I would never be able to climb. I did a hill that locals told me hit 19% and I was in my small gear (on a triple Roubaix) making the absolute maximum effort I could do and collapsed at the top thinking I would die. I'm 25lb lighter now and would like to do it again but it would still be an omg crazy hard thing for me. Tell me you ride up those hill daily....

  16. #16
    Senior Member Fiery's Avatar
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    Quote Originally Posted by sreten View Post
    Hi,

    That is because they indicate the maximum slope,
    not the average, of the incline being indicated.

    rgds, sreten.
    I can still think of a few that I've seen that are no way anywhere near the gradient marked, on any parts of the slope.

  17. #17
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    Quote Originally Posted by Fiery View Post
    I can still think of a few that I've seen that are no way anywhere
    near the gradient marked, on any parts of the slope.
    Hi,

    Perhaps they like exaggerating things in your part of the world

    Nevertheless the slope indicated may be only a very short section.

    rgds, sreten.

  18. #18
    Bicycle Tinker'er
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    Quote Originally Posted by Machka View Post
    If you have a look through the Photo Threads, you'll see several of bicycles with mountains, scenic climbs, and two threads entitled ...

    "Your bike with a percentage of grade sign/Photos of your bike next to % grade signs"


    http://www.bikeforums.net/showthread...-Photo-Threads



    And yes, many places list the % on signs, but usually only if it is more than 8%.
    Thanks I'll have to seek out a hill here in Missouri(With a sign) and conquer it and post my victory picture. Might be a long way coming though, just today I tried a hill with what I calculated to be a 6.7% gradient and I went up in what I thought was low gear. Don't think I have enough strength yet. Anyway, I'll have to make it my long-term goal to take a hill with a 8% gradient.
    First God made the fixie, then he made the freewheel because he was tired of pedaling.

  19. #19
    2 Fat 2 Furious contango's Avatar
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    Quote Originally Posted by Mr_Wrench View Post
    Thanks I'll have to seek out a hill here in Missouri(With a sign) and conquer it and post my victory picture. Might be a long way coming though, just today I tried a hill with what I calculated to be a 6.7% gradient and I went up in what I thought was low gear. Don't think I have enough strength yet. Anyway, I'll have to make it my long-term goal to take a hill with a 8% gradient.
    A lot will depend on how long the hill is.

    I've got up short hills where the gradient went up into the 20s but an 8% gradient for a couple of miles would almost certainly leave me pushing for some of it.
    "For a list of ways technology has failed to improve quality of life, press three"

  20. #20
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    Lots of climbs in the French alps have a slope sign for the forthcoming kilometre, I kind of like them

    A garmin 800 will tell you the current slope in %

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