Imigwaqo yesimanje kanye nemigwaqo egandayiwe iye yaba nezinguquko eziningi: umthamo wethrafikhi kanye nemvamisa yokushayela kwenyuke kakhulu, umthwalo we-ekseli wamaloli othutha uyaqhubeka nokwenyuka, ukushayela ngendlela eyodwa emigwaqweni ehlukene sekusetshenziswe kabanzi, futhi nemithethonqubo iye yathuthukisa kakhulu indlela yokulwa nokugeleza. ukumelana nomhlabathi, okungukuthi, umsebenzi wemishini ye-bitumen eguquliwe ngaphansi kwekhono lokushisa eliphezulu;
Thuthukisa ukuthambile nokuqina, okungukuthi, ikhono lokumelana nokuqhekeka emazingeni okushisa aphansi; thuthukisa ukumelana nokugqoka futhi andise impilo yesevisi. Izakhiwo zanamuhla zisebenzisa kakhulu uphahla lwensimbi olunesikhathi eside olucindezelwe, oludinga izinto zangaphandle zokuvikela amanzi ukuze zihlanganiswe nama-offsets amakhulu. Angakwazi futhi ukumelana nezimo zezulu eziqinile nezingamazinga okushisa aphansi, abe nokusebenza kangcono, azinamathele, enze kube lula ukwakha, futhi anciphise umsebenzi wokulungisa.

Lolu shintsho olubangelwa ukusetshenziswa kwendawo yemvelo luletha izinselele ezinkulu ekusebenzeni kwempahla yebitumen eshintshiwe. Abantu banamathisele ukubaluleka okukhulu ezintweni eziguquliwe zebitumen ukuze bazivumelanise nezimfuneko ezingenhla eziqinile zohlelo lokusebenza. Izinto zebitumen eziguquliwe ezingangeni manzi kanye nezingubo zezakhiwo zibonisa imiphumela engokoqobo kumaphrojekthi athile wobunjiniyela.
Kodwa-ke, ngenxa yokuthi intengo yezinto zokusetshenziswa ngemva kwempahla yetiyela eguquliwe ngokuvamile iphakeme izikhathi ezi-2 kuya kwezingu-7 kunaleyo yetiyela eliguquliwe elivamile, amakhasimende akaziqondi ngokugcwele izici zobunjiniyela bezinto zokwakha, futhi umthamo wokukhiqiza kakhonkolo wetiyela ukhula kancane. Itiyela elishintshiwe lanamuhla lisetshenziselwa kakhulu ukugandaya ezindaweni ezikhethekile njengemigwaqo yezindiza, imigwaqo evikela umswakama, izindawo zokupaka ezingaphansi komhlaba, izindawo zezemidlalo, izindawo zethrafikhi ezisindayo, ezimpambanweni zomgwaqo nasemakhoneni aphansi. Ngalesi sikhathi, kwasetshenziswa ukhonkolo webitumen ekunakekeleni nasekuqiniseni uxhaxha lwemigwaqo, okukhuthaze kakhulu ukusetshenziswa okusabalele kwebitumen yomgwaqo eguquliwe.