The left sign (direct import from New-York) announces the right one, just visible in the background. The latter shows the same anomaly as the sign in Guatemala and Belize: the space between the legs is not transparent. People crossing between the lines seems a difficult point for all road-sign artists. They avoid it by drawing a single bottom-line (e.g. Italy or Madagaskar) or dropping the lines altogether (most countries).
Honokaa (1996); pict. B. Baeten & A. De Dier

Look up their counterparts in the United States.