The ornamental design for track for tracklaying vehicles, as shown and described.
1. Track for tracklaying vehicles
1.1 : Front
1.2 : Right
1.3 : Left
1.4 : Back
1.5 : Bottom
1.6 : Top
1.7 : Cross-sectional
1.8 : Cross-sectional
1.9 : Perspective
The short thin lines not connected to outline are not part of surface ornament, but are supposed to describe the curvature of the 3D surface; the parts shown by means of broken lines in the reproductions are not part of the claimed design; the pair of thin wave lines on each drawing indicates a broken view.