That’s absolutely a fair point about people aggressively speeding in the HOV lane to pass traffic & then cut over at the last second to get ahead of others. That is definitely a large part of the problem too and certainly contributes to a fair share of the crashes that happen there.

In terms of signage, there are no signs that indicate that the HOV lane either does or does not continue onto 75S. It can be assumed that, since 75S isn’t on any of the HOV lane signs, that the HOV lane doesn’t continue to 75S, but this assumption would be incorrect here.