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Symboler og enheder i vejgeometri

Module by: M Rask. E-mail the author

Summary: Symboler og enheder i vejgeometri

Dette er en liste over enheder og symboler, der anvendes i vejgeometri:

Tabel 1
Symbol Unit Description Beskrivelse
v m/s speed hastighed
V km/h speed hastighed
Vø km/h desired speed ønskelig hastighed
Vd km/h design speed dimensioneringshastigheddimensionsgivende hastighed
VS km/h signalized speed skiltet hastighed
tR s reaction time reaktionstid
to s overtaking time overhalingstid
S m sight distance sigtelængde
LR m reaction distance reaktionslængde
Lbr m breaking distance bremselængde
Lstop m stopping sight distance stopsigtelængde
Lmeet m meeting sight distance  
Lmøde m   mødesigtelængde
Lover m overtaking sight distance overhalingssigtelængde
R m radius radius
d m distance to sight obstruction afstand til sigthindring
g m/s² gravity acceleration tyngdeaccelerationen
μs decimal form coefficient of friction for side slope sidefriktionskoefficient
μbr decimal form coefficient of friction for breaking bremsefriktionskoefficient
μres decimal form resulting coefficient of friction resulterende friktionskoefficient
i ‰decimal form side slope tværfald, sidehældning
α º side slope angle sidehældningsvinkel
gv ‰decimal form gradient, longitudinal road slope gradient, længdefald
A clothoid parameter klotoideparameter
sup m superelevation overhøjde

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