In 1953, the Reservation of Separate Amenities Act was passed in South Africa. When talking about the impact of this legislation, it might be helpful to break it down into different categories.
Socially, for example, the Act sought to limit the amount of contact between different racial groups. As the other educator mentioned, this meant that black and white South Africans used different public facilities like toilets, taxis, and elevators—even schools and churches. The only exceptions to this Act were public roads and streets: everything else was segregated.
This separation also had an economic impact on black South Africans. Because of the segregation, they did not have access to the same caliber of schools, university educations, or employment opportunities as white South Africans, which affected their economic status. Remember that the whole point of this law was to reinforce the idea of white supremacy, not to improve the lives of black South Africans.
Therefore, the quality of education and employment provision for black South Africans were inferior to that of white South Africans. This also links into the cultural impact of the Act: it made clear to everyone in South Africa that white culture was dominant and anything else was considered inferior.
For more information and context, see the reference link below.