Complex sentence: Sessions, 33 The tower was the first innovation that used the three-colored traffic signal and appeared first in the City of Detroit, where the first three-colored traffic light was built at the intersection of Michigan and Woodward Avenues in 1920.
Split into simpler sentences: Sessions, 33 The tower was the first innovation that used the three colored traffic signal and appeared first in the City of Detroit. Where the first three colored traffic light was built at the intersection of Michigan and Woodward Avenues in 1920.