I dunno. 60km/h is pretty much 40mph, which seems acceptable for what looks like a low density country road. On those sorts of roads the center line is sort of implied, and cars move to each side when approaching each other. I'd personally say the US plays it safe on low density road speeds. For example, there are a ton of roads like this that are a similar width to the above (despite not looking it) but have a 60mph (~100km/h) limit.