Re: the problem connecting highways to towns neatly, I recommend the Texas U-Turn connector on the Steam workshop. It makes it easy to get the 4 lane, 2-way streets to your city. You need to plan ahead a little though as you aren't able to build the 4 lane/2-way streets at the beginning of your city.
One problem is avoiding traffic lights when connecting to these streets, though. Roundabouts are probably the solution here.
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Politics, n. Strife of interests masquerading as a contest of principles.
--Ambrose Bierce
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