Siv cov xwm txheej ntawm txoj kev cones ntawm cov xim sib txawv
1. Liab txoj kev cones yog siv nyob rau hauv sab nraum zoov tsheb, vim hais tias lub reflection wavelength ntawm liab yog ntau dua lwm yam xim, uas muaj zoo attraction thiab muaj zog ceeb toom nyhuv. Yog li ntawd, nws feem ntau yog siv rau hauv kev tsav tsheb, txoj kev taug kev thiab chaw nres tsheb sab nraum zoov ntawm txoj kev tsheb khiav hauv nroog raws li kev ceeb toom kev sib cais.
2. Yellow road cones are mainly used in indoor parking lots. Due to the dim light, the yellow color plays an excellent reflective role in this environment, attracting the driver's attention.
3. Blue txoj kev cones feem ntau yog siv rau lub sijhawm tshwj xeeb. Piv txwv li, nyob rau hauv Japanese tshav dav hlau, txoj kev cone khoom ntawm cov xim no tuaj yeem pom.
