During the summer season, a snowflake symbol is shown on the digital displays next to the route number. This means that a train with air conditioning will arrive. There are currently 127 such trams, and the air conditioning is turned on when the outside temperature rises above 22 °C. This new feature will help passengers choose a more comfortable carriage. Currently, more than 60% of buses and all of the city's trolleybuses are also equipped with air conditioning.
