"I think they use the default script. But as I can say, the lights look good, flash all the time, sound is great and they stop the traffic.
I'd say they are as good as the old ones and come also in gateless and cantilever configuration.

"
EDIT:OMG! I just realized that this was total crap what I've writen here. (not from the facts, but totally offtopic)
I can't believe it. Maybe I shouldn't always be so fast in replying.
To the topic: The Searchlight Beta uses the default scripts, but Jerry wants to include the other scripts later.
"Do not mix these signals with signals that are scripted by Pikehkr (Tim McIntosh). This may result in unpredictable signal / AI behavior on your route. A later version of this signals will contain the Pikehkr scripts."