Abantu bitondera cyane kubwubatsi mumijyi, kandi gukoresha asfalt biriyongera. Igipimo cyo gusaba kuri sitasiyo ya Asfalt gihingwa gisanzwe gikura vuba.

Sitasiyo yo kuvanga Asfalt izahura namakosa amwe cyangwa make mugihe cyo gukoresha. Ibisanzwe cyane ni kwambara kangeven yimodoka ishyigikira uruziga. Rimwe na rimwe, hazaba urusaku rudasanzwe n'amaboko. Impamvu nyamukuru yibi nuko nyuma ya sitasiyo ya Asfalt yakoraga mugihe cyimbere, silinderi yo kumisha imbere izayoborwa ubushyuhe bwinshi, hanyuma amakimbirane azaba hagati yimodoka ishyigikira kandi yimodoka.
Ibihe byavuzwe haruguru nabyo bizaherekezwa no kunyeganyega bikabije, kuko sitasiyo ya Asfalt izatera icyuho hagati yibikoresho byumurwa, cyangwa uruziga rwibintu byumye, cyangwa imyanya yombi ya bombi izahindagurika. Mugihe uhuye niki kibazo, umukoresha agomba kongeramo amavuta kumwanya wo guturika hejuru yimodoka ishyigikira uruziga rushyigikiye hamwe na gari ya moshi nyuma yo gukora buri munsi.
Byongeye kandi, abakozi bakeneye kandi kwitondera kandi bahindura umwanya ubwoba bwo gutunganya ibinyomoro mugihe cyongeraho imirima myiza hamwe na gari ya moshi, kandi nta kunyeganyega.