Tracks for farm collection systems are usually placed in a zig-zag fashion, where a minecart does a 180° turn as soon as it hits the edge of the farm, and continues until it covers the full width of a farm.

Minecarts tend to confuse which straight line they're running in, causing it to eventually go backwards. Additionally, minecarts may also derail on a turn, but this does seem like a documented feature. Even setting the maximum cornering speed to a ludicrous 5000 m/s doesn't mitigate the derailing.

also nice commit messages

Higher speeds will cause them to derail easier. Lower speeds will keep them on the rails.

As for tight 180 degree turns, it's known and is basically unavoidable.