Polish road signs: D7 (expressway) and T28 (toll road)
This file was derived from:

 Znak D9+Tabliczka T28.svg: 
Znak D7.svg:
Znak_D9+Tabliczka_T28.svg: Miko101
Znak_D7.svg: Malarz pl, Pz, Miko101
derivative work: Musp