Cov xim thiab cov duab ntawm cov cim tsheb raug txiav txim li cas?

Traffic signage yog ib qho khoom siv uas siv cov cim kos duab thiab cov ntawv xa mus rau cov ntaub ntawv tshwj xeeb los cuam tshuam nrog kev tsheb thiab qhia kev tsav tsheb kom paub meej txoj kev dredging thiab kev nyab xeeb ntawm kev tsav tsheb. Nws yog qhov tsim nyog rau txoj kev loj, kev hauv nroog thiab txhua txoj kev tshwj xeeb. yuav tsum tau ua raws.

Cov kev cai rau cov xim thiab cov duab ntawm cov cim tsheb yog raws li nram no. Cov xim ntawm daim ntawv ceeb toom yog daj tom qab, ciam teb dub, daim duab dub, thiab cov duab yog ib daim duab peb sab sib npaug nrog cov ces kaum sab saum toj tig mus. Cov xim ntawm cov cim txwv tsis pub muaj dawb tom qab, lub voj voog liab, liab bar, cov duab dub, thiab cov duab raug nias tawm tsam lub bar. Lub sijhawm no, kev txwv tsis pub hla dhau thiab cov cim txwv ceev raug tshem tawm raws li keeb kwm dawb, lub voj voog dub, cov kab dub, cov duab dub, thiab cov duab raug nias tawm tsam cov tuav.

Cov duab yog ib lub voj voog, thiab qhov muab txoj kev kos npe yog ib daim duab peb sab sib npaug nrog lub kaum sab xis saum toj. Cov xim ntawm qhov taw qhia yog xiav tom qab, duab dawb. Cov duab yog lub voj voog, duab plaub thiab square. Tsuas yog cov cim tseem ceeb, 100- meter stakes, thiab cov cim ciam teb ntawm txoj kev, xim ntawm cov paib ntawm txoj kev feem ntau yog xiav tom qab thiab daim duab dawb. Tsuas yog cov cim qhia qhov chaw nyob, cov duab yog tag nrho cov duab plaub thiab squares.

Milestones, 100-meter stakes thiab txoj kev ciam teb yog tag nrho cov paib txoj kev. Thaum lub sijhawm tseem ceeb tau teeb tsa ntawm txoj kev hauv tebchaws, cov xim yog xim dawb thiab cov cim liab; thaum lawv tau teeb tsa ntawm txoj kev hauv xeev, cov xim yog xim dawb thiab xiav cim; thaum lawv muab tso rau hauv lub nroog thiab hauv nroog txoj kev, cov xim yog xim dawb thiab cov cim dub. Cov xim ntawm txoj kev ciam teb cov cim yog tag nrho cov keeb kwm dawb thiab cov cim dub tsis hais qhov xwm txheej ntawm qhov deb.