Exactly. There is a difference between not allowed to merge and not physically able to merge. Merging not being allowed is still dangerous because people don'

Exactly. There is a difference between not allowed to merge and not physically able to merge. Merging not being allowed is still dangerous because people don't always follow the rules. It might even be more dangerous than lanes that always allow merging because then at least drivers in the faster lane can prepare themselves to expect merging. A separated lane makes it impossible (or at the very least potentially damaging to the vehicle) to merge. Here is an example of what I think is the ideal HOV setup[1]. There are two lanes so a single slow driver can be overtaken and there are physical dividers that prevent unexpected merging. You can also see the toll signs mentioned in the article that display the passenger number set on the transponders as discussed in the article. [1] - https://www.google.com/maps/@33.9392023,-118.2796649,3a,75y,305.13h,74.02t/data=!3m6!1e1!3m4!1sY2VcBfxRiU05VehGvM8OCQ!2e0!7i16384!8i8192 https://www.google.com/maps/@33.9392023,-118.2796649,3a,75y,...