"Traction surfaces" refer to the type of material or texture on a surface that helps increase friction or grip, making it less slippery or easier to walk or drive on. Full definition
Activity should be restricted to a good traction surface indoors and to a leash outdoors for the first six weeks. (globalvetspecialists.org)
Animals must be confined to a good traction surface indoors and on a leash when outdoors for about 5 - 6 weeks. (globalvetspecialists.org)
On relatively high traction surfaces, rear wheel drive is better balanced as the front tires provide much of the braking and all of the steering. (greencarcongress.com)