Speedway would be pushing it for sure. You running an 800 GRE/RS/Remtronix duckie? I barely get S3 on my 436 and I am on second story of home in Near NW right off MLK at 27th/Rader . Its very rare the 396 picks it up at all here. But if I go over to the Central Library which is further South, and East, I get S3 on both just fine on ground level. The signal fades very fast further West you go. Now if you were near the Marion/Hamilton/Boone corner, you could pick it up fairly easily. But it does not dip South very far West of that mid line of Meridian, and past MLK it fades out quickly. I would love to see if anyone with a SDS100 can make the say 16TH Street run and see where it fades Westward... And then make the runs out Lafayette, MLK/Michigan, etc., and see how far South you can still get it. After all, its only pumped South on the 2 shared sties at Carmel, and Fishers unless they made some changes, and I do not think that has happened.
They set up S1 and to a lesser extent S2 to have much wider coverage in the beginning as we had a big chunk of Hendricks County, INDOC, on the old analog system back in the MECA days. The Hamilton County Simulcast was set up to be pretty tightly on Hamilton County, with only the areas down into central downtown Indy, and some Lawrence areas given coverage. Madison County mainly local but with some coverage into Hamilton, and Hancock... And a corridor to Indy, though they have S1 in the radios and can use it for interop if they ever have to make an mutual aid run over here.