I have Adobe Illustrator which I bought outright at least 8 to 10 years ago. Now I see if you want to purchase Adobe Illustrator you will have a monthly fee. I definitely do not like that idea. Say you pay $20 a month that would be $240 a year or $1200 for a 5 year period. Now I realize you will get the update along with that whenever there is an update versus having to pay for the update. But it fills my need so I have never updated the software. This is why if I ever would need another software to draw with I will probably check out the Corel Draw.
When I first got Adobe Illustrator I took personal lesson to learn how to use the pen tool and there was a learning curve to it. One day while searching for how to make roads I came across a web site telling how to make simple roads. I don't remember what site it was but basically it said on layer 1 to draw your roads (I use black) when you are finish copy all the roads and lock layer 1 and create layer 2 and use (I have a Mac) hold down command and the F key and it will copy right over the top of the roads on layer 1. You would then change the color of the roads on layer 2 to (I use white) a color. Make the weight of your line smaller than the weight of the line on layer 1. And than you will have all the roads. This is the basic way I do it. Sometimes you may have to make adjustments but they are just small adjustments. I am by far not an expert but if I can help please get in touch with me.