Standard sign in Western Australia warning of a school zone ahead with speed limit. Source.
This file was derived from:

 AU-VIC road sign R4-V105 (40) (obsolete).svg: 
MR-WDAD-2.svg:
AU-VIC road sign R4-V105 (40) (obsolete).svg: Cassowary
MR-WDAD-2.svg: *Au.crosswalk_ahead.svg: *Au.give_way_ahead.svg: *MUTCD_W3-2.svg:
Australian_road_sign_R1-2.svg: Queensland Government of Transport and Main Roads
file:Australia road sign W5-29.svg (original name file:Kangaroo Warning Sign.svg):
derivative work: Fry1989
Au.pedxing.svg: Cassowary
derivative work: Fry1989
Au.speedlimit.end_60.svg: Cassowary
derivative work: Fry1989
derivative work: Fry1989