Operation began on the first electric underground railway in 1890 with a uniform fare of twopence for any journey on the 3-mile (5-kilometre) line.

- https://www.britannica.com/technology/subway

and we're still looking for regular 6hr/day light.
meanwhile, Lagos is wasting billions on overhead railway lines...
when same monies can pay for rail lines from Lagos to epe.

One has left the facility unrestrained
CC nurey, ishilove

In Budapest, a 2.5-mile (4-kilometre) electric subway was opened in 1896, using single cars with trolley poles; it was the first subway on the European continent. Considerable savings were achieved in its construction over earlier cut-and-cover methods by using a flat roof with steel beams instead of a brick arch, and therefore, a shallower trench.

kingreign:
One has left the facility unrestrained
CC nurey, ishilove

let him land 1st be patient

In Paris , the Métro (Chemin de Fer Métropolitain de Paris) was started in 1898, and the first 6.25 miles (10 km) were opened in 1900. The rapid progress was attributed to the wide streets overhead and the modification of the cut-and-cover method devised by the French engineer Fulgence Bienvenue. Vertical shafts were sunk at intervals along the route; and, from there, side trenches were dug and masonry foundations to support wooden shuttering were placed immediately under the road surfaces. Construction of the roof arch then proceeded with relatively little disturbance to street traffic. This method, while it is still used in Paris, has not been widely copied in subway construction elsewhere.