London has the highest public transport costs of any major city, however, with a monthly ticket costing a whopping $179. That's still cheaper than in 2014 when it cost more than $200.

Arcadis examined 100 major cities across 23 different indicators to give an indicative ranking of the mobility and sustainability of their transportation systems.

Promotion expenses on public transport have totalled €404,662 since the service was privitised by Autobuses de Leon at the start of the year. Information tabled in parliament by transport minister Joe ...