Lub teb chaws cov qauv qhia tias daim iav qhov ntev sib txawv raws li lub tsheb qauv. Sab nrauv rearview tsom iav muaj li ntawm 18 mus rau 35 cm nyob rau hauv dav, thaum sab hauv rearview tsom iav li ntawm 9 mus rau 12 cm nyob rau hauv dav.
Yam tsawg kawg nkaus rau sab hauv rearview iav (Class I)
Nws yuav tsum muaj peev xwm sau ib daim duab plaub rau ntawm qhov pom ntawm qhov siab ntawm 40 mm thiab lub hauv paus ntev ntawm * a *.
Yam tsawg kawg nkaus rau sab nrauv rearview tsom iav (Chav II thiab III)
Nws yuav tsum muaj peev xwm sau ib daim duab plaub rau ntawm qhov pom ntawm qhov siab ntawm 40 mm thiab lub hauv paus ntev ntawm * a *, nrog rau cov kab ntawm qhov ntev * b * thaum uas tig mus rau qhov siab ntawm daim duab plaub.
1. Compact tsheb: Dav 18–25 cm, qhov siab 25–35 cm (xws li, Honda Fit); tsim los xyuas kom meej maneuverability.
2. Mid-size tsheb: Dav 22–30 cm, siab 30–40 cm (eg, VW Magotan/Passat); muab ib tug dav rear saib.
3. Loj SUVs/MPVs: Dav 28–35 cm, siab 35–45 cm (xws li, Toyota Highlander); pab txo qhov muag tsis pom kev tshwm sim los ntawm tus ncej A-.
4. Daim iav iav cov ntsiab lus: Lub iav nws tus kheej yog feem ntau me ntsis me dua lub tsev; Piv txwv li, daim iav iav ntawm Audi A7 ntsuas kwv yees li 15-20 cm ntev thiab 8-12 cm dav.