In this graduation thesis I showed the differences between three methods for calculating the capacity of a railway. I used the following three methods: method UIC 406, method named after Kovaćević and method UIC 405. At first I described every method. After that I calculated the capacity of a railway for each method for the track Dobova –Zidani Most. In the end I compared the three methods and I
justified why it came to differences in capacity.