After the inauguration of Metro Bilbao in 1995, the number of passengers transported by Bilbobus fell from 32 million to around 29 million. The underground's extension to the neighborhood of Santutxu in 1997, accelerated the decline in ridership, and it fell below 23 million in 1999. Some lines were suppressed, and the number of bus units used was lowered. A reorganization of lines, and an improvement of the service have led to an increase of the ridership. The number of passengers has risen around 3 to 4 per cent yearly, and is expected to reach more than 28 million in 2008, its highest level in ten years. Busiest lines in 2007 Peñascal - Mina Del Morro: 2,008,969 passengers La Peña - Jesusen Bihotza: 1,959,000 passengers Otxarkoaga - Plaza Biribila: 1,789,088 passengers Txurdinaga - Miribilla: 1,681,512 passengers San Ignazio - Txurdinaga: 1,673,612 passengers Tickets Passengers are typically recommended to use a Creditrans ticket of the Barik card. The card is validated each time you board the bus. The Barik card is also valid on trains, Metro Bilbao and BizkaiBus bus services, which extend wider out of the city centre into all of Biscay. Tickets are also available on board at a flat rate of 1.15 euro. References External links Bilbao bus service in real time with Google Maps Transport in Bilbao