If you are visiting Amsterdam on a budget and don't mind being in close proximity to strangers, this scheme allows you to get a free bike ride. Yellow Backie lets people essentially hitchhike by sitting on the luggage rack of a local's bicycle.
Getting a ride on the back of a cyclist's luggage rack is a Dutch practice often referred to as 'Backie.' In a way, this encourages tourists and visitors to experience Amsterdam in a more authentic (not to mention eco-friendly) way, especially considering the bicycle-favoring culture there.
Those wishing to get a free bike ride through Yellow Backie should keep an eye out for the specially marked bright yellow luggage racks. Then you simply yell 'Backie' to hail one down.
Cyclists interested in getting involved can apply online through Yellow Bike.