According to the parking space allocation standard of central city in Several Provisions on Constructive Detailed Planning of Urban Planning Area and Management of Construction Engineering Design Scheme, the proportion of motor vehicle parking spaces in medium-sized libraries is 100㎡.

Parking ratio refers to the ratio of "total number of owners" to "total number of parking spaces" in a community, which is generally expressed by "1: x", where 1 represents the number of residents in the community and x represents the number of parking spaces in the community, which is the requirement of current community planning and the concept of proportion.