Chicago has a very well developed public transport network – something that shouldn't be taken for granted in the USA. Travellers can buy a Ventra Card from ticket machines for 5 USD, for example, and charge this with money. The whole network can be used for 2.25 dollars for 2 hours (up to 2 extra trips for 25 cents each). A CTA day pass costs 10 dollars, a 3-day pass costs 20 dollars and a 7-day pass costs 28 dollars. The whole system is very easy to use and convenient.