Umsebenzi weivesti ekhanyayokukwenza ukukhanya okunamandla kakhulu kwimeko yokuvezwa kokukhanya, okunokuvuselela i-nerve ebonakalayo yomqhubi, khumbuza uBai ukuba anikele ingqalelo kubahambi ngeenyawo ngaphambili, kwaye aqhube ngononophelo ukuphepha iingozi.Iivesti ezibonakalisayozifanele ubukhulu becala amapolisa, abalawuli beendlela, abalathisi bendlela, abasebenzi bokugcinwa kweendlela, abaqhubi beemoto neebhayisekile, abasebenzi ekukhanyeni okuphantsi, nezinye iindawo apho abasebenzi kufuneka basebenzise ukukhanya ukuze balumkise.Umzimba ophambili wevest ebonakalisayo wenziwe ngelaphu lemesh okanye ilaphu elingenanto, kwaye izinto ezibonisayo yilaphu ekhanyayo okanye ilaphu elikhanyayo elikhanyayo.