I think all the intermittent settings are speed sensitive. I also think it depends on when you turn on your wipers.
For example, if you turn on your wipers when moving, the slowest setting will automatically "speed" up because the speed sensitive feature presumes you are hitting more rain drops because of your speed. If you come to a stop light or stop sign, the slowest setting becomes very slow. Almost non-existant. If you turn on your wipers to the slowest setting when not moving they will function at their default speed.
Another similar example, if you turn on your wipers when moving, the highest intermittent setting will automatically "speed" up to the low setting. This is done again because the speed sensitive feature presumes you are hitting more rain drops because of your speed. If you come to a stop light or stop sign, the fastest intermittent setting becomes intermittent again.
I am not sure if all models of the Ridgeline come with the speed sensitive feature or not. I have the RTL-SR and my wipers perform like I mentioned above.
My '03 Accord EX-V6 had speed sensitive wipers, I believe the other Accord models did not have this feature.
As mentioned in an earlier post, the speed sensitive wipers also automatically give the windshield a wipe when ever you take your foot off of the brake pedal when fully stopped no matter where you are at in the intermittent cycle.