(06 Aug 2015, 3:29 pm)G-CPTN wrote Your wee'en should be congratulated on his achievement - however, suggest that he should draw out each route on a separate sheet before joining them up where there are common destinations - then he can condense the result onto one (smaller) sheet.
The individual sheets don't need to be full A4 size (though there is no reason why not - providing you have a large floor area where he can lay them out).
He tends to use the schematics off individual bus timetables - they start off tidy, when there's only a few routes joined together. It's when he adds more outlying routes that things go wrong.
He's always had a thing for drawing maps, charts, plans etc but forward planning is a real weakness. He's rather impulsive and tends to want to jump straight into something without thinking about potential pitfalls before he starts. He also has a big aversion to using a ruler!