These two are not walking along the lines as most children do (e.g. Guatemala, Hawaii, Belize). They are crossing the delimited zone. This brings me to the conclusion that the dashed lines show the borders of the road contrary to the abovementioned countries where the lines indicate the crossing place.
The two-lines method is the (Central) American way of doing; it is an exception in Africa.
Some more observations:
- The children are very small compared to the canvas. (similar case in Madagascar -not on line-)
- Both are boys; I'm not sure of the left child though: unusual in Africa.
- The detail shows why they are walking away from the viewer.
