alt Hacker NewsOne wonders if you could prefabricate kerb ramps and drop them in, rather than (I assume) casting them in place.
Maybe they'd settle badly if vehicles drive over them, kick up in the opposite corners and become a trip hazard.
The UK mostly skirts this by using tarmac and paving slabs instead of concrete.
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Very few sites are going to be flat or square. I suspect prefabbed parts mostly wouldn't fit without custom adapters around the edges.
I don't think there's a way to do this without casting something to connect the pre-fab to the surrounding concrete sidewalk. Like how do you precisely cut out the existing curb so the prefab just fits (including elevation/slope) without excessive gaps or something? And if you're pouring concrete anyway, might as well pour the curb itself.
Or make the asphalt "ride up" onto the sidewalk itself, so the complicated part is made of asphalt.
Likely this won't be terribly faster, and I did see the company near us using a machine that was building curb cuts directly.