In Europe and North America, the promotion of cycling has been very successful. In Holland, where touring by bicycle is very popular, 30,000 km of cycle paths have been opened since 1976, which is equal to over 30 % of the total length of all roads.
看看歐美國家推廣自行車的盛況：單車旅遊盛行的荷蘭於一九七六年時，已建有三萬公里長的自行車專用道，佔全國道路總長度的三成以上；芬蘭全國人口數約五百萬，自行車超過三百五十萬輛。