Lub luag haujlwm tseem ceeb ntawm cov cim tsheb hauv kev nyab xeeb
Cov cim tsheb yog qhov tseem ceeb rau kev nyab xeeb rau kev nyab xeeb, ua haujlwm raws li kev pom zoo thoob ntiaj teb uas cov tsav tsheb, thiab cov neeg caij tsheb kauj vab. Lawv muab cov lus tseem ceeb rau txoj kev khiav khiav, thiab cov lus ceeb toom phom sij, txo cov xwm txheej los ntawm 25%
Cov. Lawv cov khoom muaj tseeb, txhim kho los ntawm cov xim hlaws lossis xim tshwj xeeb, ua kom pom kev zoo txawm tias muaj kev tawm tsam thiab kev tiv thaiv kab mob thiab kev sib tsoo
Markings xws li hla kab, nres kab, thiab kev caij tsheb kauj vab tiv thaiv cov neeg siv hluav taws xob tsis muaj kev phom sij, thaum cov cim thiab cov xib-taw thiab cov xib-taw kev ua kom zoo ntawm kev sib tshuam
Cov. Ua raws li cov qauv thoob ntiaj teb (E.G., MUTCD) ua kom zoo ib yam li cov khoom siv hluav taws xob zoo ib yam li 3-8 xyoos nrog kev txij nkawm tsawg
Cov. Los ntawm kev sib xyaw ua ke cov ntsiab lus no, kev taug kev chaotic rau hauv kev saib xyuas, muaj kev nyab xeeb network rau txoj kev pleev xim zoo rau txhua tus
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