Underground railway system in Berlin and Istanbul.
In Germany the first underground was built in 1902 in Berlin. It was 13 meter long 2,30 meter wide and 173 stations where also build in the beginning. According to http://www.berlin.de In 2011 507,3 mil people used the underground which means 42,275,000 mil per month and 1,409,166,67 million per day. In the consideration that and average ticked cost approximately 4 euro the daily income only from tickets from the underground would be 5,636,666,68 euro per day. The construction price for the whole concept was according to http://www.focus.de/politik/deutschland/433-millionen-euro-sind-nicht-genug-kanzler-u-bahn-kommt-berlin-teurer-als-geplant_id_3428959.html approximately around 525 million euros.Compered with Istanbul’s underground system called “metro“ the only point to which is approximately similar somehow is the construction costs. On http://arsiv.ntvmsnbc.com/news/30122.asp it’s stated that construction costs for the underground in Istanbul is about 631 million dollar which is concerted to euro 507,59 million. It’s also stated at http://arsiv.ntvmsnbc.com/news/30122.asp that the undergrounds max. capacity is 70.000 people per hour calculate this for a day month and year would be in average 1,330 mil per day ( 19 hour active work ), 39,900 mil per month and 478,8 mil per year. To figure out the income from the underground “metro“ in Istanbul we will make it fair and take the student price from one half and a normal price from the other half and add them together. The student price is 110 and the full price is 2,90 which gives us the result of the income per day month and year. Making a start with the yearly income 957,6 mil per year, 319,2 mil per month, 2,66 mil per day.