Regional Boards > International Highways

Japan: R= curve signs

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mcmc:
Saw these signs all over the mountain expressways in the south of Kyushu. What the heck does R=###m mean?

westerninterloper:
I believe it is "radius", the length of the curve.

Rothman:

--- Quote from: westerninterloper on December 28, 2021, 06:06:22 PM ---I believe it is "radius", the length of the curve.

--- End quote ---
Radius isn't the length of the curve. :D

CtrlAltDel:

--- Quote from: westerninterloper on December 28, 2021, 06:06:22 PM ---I believe it is "radius", the length of the curve.

--- End quote ---

Not so much the length of the curve, but the curve's sharpness. The smaller the number, the tighter the curve.

Rothman:

--- Quote from: CtrlAltDel on December 28, 2021, 06:46:28 PM ---
--- Quote from: westerninterloper on December 28, 2021, 06:06:22 PM ---I believe it is "radius", the length of the curve.

--- End quote ---

Not so much the length of the curve, but the curve's sharpness. The smaller the number, the tighter the curve.

--- End quote ---
That's more like it.

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