Kodi anthu amasankha phula kuti azikonza msewu? Malo osakaniza phula adati ndichifukwa chazifukwa izi:
Choyamba, phula ili ndi flatness yabwino, kuyendetsa galimoto kumakhala kosavuta komanso kosavuta, phokoso lochepa, ndipo sikophweka kutsetsereka pamsewu;

Chachiwiri, phula limakhala lokhazikika bwino;
Chachitatu, phula imapangidwa mwachangu komanso yosavuta kukonza;
Chachinayi, phula la phula limatha msanga;
Chachisanu, misewu yopangira phula sasokoneza anthu ndi maubwino ena ambiri. Simenti ndi nthaka yolimba, yomwe iyenera kukhala ndi zolumikizira, ndipo kumanga kumakhala kovuta. Kuwonjezeka kwa kutentha ndi kuchepa mu nyengo zinayi kumakhalanso kosavuta ming'alu.
Inde, phula ilinso ndi zovuta zake. Zinthu za asphalt zimatenga kutentha. Dzuwa likakhala lamphamvu kwambiri m'chilimwe, phulalo lidzasungunuka pang'ono, zomwe zimapangitsa phula lomwe silingathe kutsukidwa pamatayala agalimoto yoyenda. Izi ndizovuta kwambiri kwa driver. Choncho nthawi zambiri timamva nkhanza kuchokera kwa dalaivala.