Parking spaces are big: https://www.dimensions.com/element/parallel-parking-spaces-layouts https://www.dimensions.com/element/parallel-parking-spaces-l... At 7

Parking spaces are big: https://www.dimensions.com/element/parallel-parking-spaces-layouts https://www.dimensions.com/element/parallel-parking-spaces-l... At 7x2.5m I can imagine 10 bicycles side-by-side with ~70cm each, with another 10 'interleaved' opposite.