OSAKA -- What is dubbed the world's longest monorail, located in northern Osaka Prefecture, saw its 100 millionth passenger Monday, eight years and seven months after it opened, officials said.

Manami Yokota, 35, of Suita, Osaka Prefecture, became the 100 millionth passenger on the 21.2-km monorail line by using it at Senri-Chuo Station in Toyonaka.

She was given a certificate and a hotel coupon by the railway.

The line initially was opened in 1990 between Senri-Chuo and Minami-Ibaraki stations, was extended to Itami airport in April last year, and to Kadoma-shi from Minami-Ibaraki Station in August during that year.

The pace of reaching the 100 million mark was rather fast compared with that of Tokyo Monorail, which links Hamamatsucho Station and Haneda airport. Tokyo Monorail reached the mark nine years and one month after it opened, the officials said.