Verified answer

It is very simple. Bus routes are identified by unique numbers and route numbers and termini are clearly indicated on bus stops and on buses. Schedules are also posted on all bus stops. On some routes electronic signs inform when the next bus is due. In many bus stops there are also detailed maps.

In the rail network route numbers are not always indicated, but termini are always clearly posted on trains or on electronic platform signs. In the metro the three main lines have different colours that are consequently used.

The link below will give you all information you need.