the city. They further suggested that the night service be advertised with bilingual visual information at Sofia Airport for the benefit of tourists, and proposed the introduction of a fifth night line (H5) to serve the airport, which was underserved at night. Czech Republic Prague: Prague tram network runs services on 10 night routes (90-99) at 30 minute intervals from Sunday to Thursday, and at 20 minute intervals on Fridays and Saturdays. There are also 16 night bus routes (901-916) which run 30–60 minutes except for 903 line which runs every 120 minutes. Denmark Copenhagen: Copenhagen Metro : the 4 lines of the Copenhagen Metro run 24/7. Øresundståg is a 24/7 train between Østerport via Copenhagen in Denmark to Malmö and Lund in southern Sweden. Movia is the public transport agency that is responsible for buses and certain local railways in Copenhagen. Movia has 7 night bus lines: 90N, 91N, 93N, 94N, 97N, 98N and 99N which mostly operate on Friday and Saturday nights between 01:00 and 05:00. Buses generally depart on the hour or every second hour. The night-bus bus-stop signs are recognisable by their grey colour. Finland Helsinki: Bus public transportation in Helsinki is managed by Helsinki Region Transport (Finnish: Helsingin seudun liikenne, or HSL). Helsinki metro services operate between the hours of 05:30 and 23:30 Monday-Saturday, and slightly less on Sundays (starting at 06.30). Most bus lines start at 05:30 in the morning and finish at 23:45, with the most popular lines running a bit later until 01.30am. At the weekend, nightlines are operated between 01:30 and 04:00 and offer direct bus connections between Helsinki city centre and outlying areas. To get to the same areas during the daytime would require a combination of train, bus or metro but at night they are direct buses. There at least 40 such night routes in the Helsinki bus network (fi). Bus drivers do not sell tickets or cards onboard; they must be purchased in advance, and Helsinki Central Station is the local transport hub for buses in the city centre. France Paris: Noctilien buses Paris has 48 routes in service 7 days from 00:30 to 05:30. Lyon: The Lyon public transport agency TCL operates three bus routes (PL1, PL2, PL3), labelled ('full moon') (fr), which depart the city once per hour through the night from 01:15 - 04:15 (Thursday–Saturday). The transport card used on the Lyon bus network (day