Complex sentence: Others, particularly the "Fall Color Tours", operate the 6.5 miles between Tecumseh and Raisin Center, where there is a level junction with the Norfolk Southern Railway (former Wabash) mainline from Detroit to Fort Wayne, Indiana.
Split into simpler sentences: Others, particularly the "Fall Color Tours", operate the 6.5 miles between Tecumseh and Raisin Center. This is a railroad junction where the line has a level junction with the Norfolk Southern Railway (former Wabash) mainline from Detroit to Fort Wayne, Indiana.