Answer:
Underground electric railway system.
Explanation:
As the exercise explains, Edward Johnston was chosen to design the first and exclusive underground electric railway system. As it is developed as well, the strokes of this sans-serif typeface have consistent weight; however, the letters have the basic proportions of classical Roman inscriptions. He is known as the "father" of modern caligraphy, as he was the precursor of writing with a broad-edged pen.
