Two I've seen so far are 57 onto the 210 west and 605 onto the 210 east. Seems to help traffic flow on the freeway you're merging onto but totally sucks for all the cars waiting for the meter. You could be stuck behind them for a good 15-20 minutes to get through.
Edit: I'm not talking about the stoplights at a on-ramp but where a freeway merges onto another freeway.
Edit: I'm not talking about the stoplights at a on-ramp but where a freeway merges onto another freeway.
