32 bytes, not 16 words: every user indexes it a byte at a time. mhc_scroll_horizon and sh_not_flat_road load $B827 and add a 1-based curvature magnitude; B9BD adds a byte index built from the curvature and the speed; only B864 reads two adjacent entries, and it takes them high byte first (B from the lower address, C from the higher), which is not how a DEFW would be stored.

The first eight bytes are 255 divided by 1 to 8, so the value is the number of ticks between horizon steps and the scroll rate rises with the curvature.

breaks/crashes road rendering if messed with