The higher degree of diligence of a carrier is a concept that changes over time and needs to be furnished separately in each case by analysing the circumstances as a whole. Often, the line between relieving the carrier from liability due to circumstances is vague, therefore it cannot be claimed that there are any number of specific circumstances that would always relieve a carrier from liability or rule out such liability.
Vedaja suurem hoolsus on ajas muutuv mõiste, mida tuleb sisustada iga kord eraldi, analüüsides asjaolusid kogumis. Sageli on piir asjaolu pidamisel vedajat vastutusest vabastavaks ebamäärane ning seetõttu ei saa kindlalt väita, et mingid konkreetsed asjaolud tooksid alati kaasa vedaja vastutusest vabanemise või välistaksid selle.