Evaluating the Street Greening with the Multiview Data Fusion

Table 1

Shenzhen road class table and sampling point buffer radius.

OSM	Road classes	Number of motor vehicles	Lane width (max. width)	Buffer radius (m)
Motorway	Elevated and expressway	4 bars–8 bars	3.5 (3.75)	60
Secondary	Urban main roads	6 bars	3.25 (3.5)	42
Primary
Tertiary	Urban secondary roads	4 bars	3.25	26
Residential	Urban feeder roads	2 bars	3.25	25
Unclassified
Cycleway	Cycle path			25