An unusually dense road network?

edit: This page has some data: https://www.researchgate.net/figure/Landscape-metrics-for-ro...

Southern Ontario has 4x the road density of the province average, so might be a contributing factor?

That whole part of Ontario is basically farms with long straight concession roads so I imagine you could cover a lot of area quite quickly just driving in a straight line for a couple hours, turning driving 2 km then turning and driving straight for a couple hours on repeat.

"The darker colours are points that were updated closer to 2007 and the brighter colours closer to December of last year." It's possible that this area was just more recently updated and is not necessarily more densely covered compared to other areas.