70% of club courts in Scotland are artificial grass - most council /public courts are are painted tarmac.
Artificial grass comes in 2 varieties - "sand dressed" and "sand filled".
The latter, which the OP posted a photo of, are around 13-15mm high polypropylene "blades" which are filled with sand, or a quartz equivalent, to a sufficient depth so that effectively you are playing on a thin film of sand over the base mat.
Theses are inherently slippy, a bit like a clay court. In fact, you can also get artificial clay courts, which are effectively the same 13mm pile base mat, but filled with a fine granual, red clay like material.
To grip on these courts you really need a shoe with a ripple ( parallel ridges) pattern - as found on most clay court shoes, or a stipple ( mini spikes) pattern - as used on hockey shoes, "astro" football trainers etc.
The "sand dressed" artificial grass , eg Tigerturf, Lano, etc. which is the more recent type, is a slightly shorter, 10-13mm pile, with about 5-7mm of sand. The sand is primarily a ballast, and you are playing on the plastic spikes. These play & grip much more like a lower bouncing & faster hard court.
Although the ripple style tread works best on these, most players do just fine with the normal block type tread pattern on most current tennis shoes .
I hope that helps.
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