KD4YGG, You are right 100% Police, Fire, and EMS for Metro Indianapolis/Marion County including Speedway Police, Fire and EMS are on MECA System 1. You also have Indiana State Police on the Indianapolis Safe-t tower site.Also Mark, You should be able to hear State Police Indianapolis Dist 52 along with ISP at the Speedway Detail thru the Boone County Safe-t tower site.Just set up your scanner to search and you will find all the talkgroups that you might be able to hear.