Symbol 2600 from ISO 7000 - Title/Meaning: Inter-axle lock 
Function/description: To identify the control for the power distribution system that synchronizes the speed of both rear driving axles. To indicate the power distribution status of the two rear axles. To indicate that turning maneuvers on high friction surfaces can result in degraded turning performance or vehicle damage.
Own work using: iso.org/obp/graphics/grs/2759e458-c944-4d0d-9fb2-a20994d903c1 200.png
Vectorization:  Mrmw