This is a new road system, so that it can be used on both sides of the road in one single, excellent way!:-D
Look:：https://youtu.be/iRgx3-Njrno
To download visit this topic in the forum：http://forum.simutrans.com/index.php?topic=16659.105

Hi Paulo, most of us in HKBF can read English, you may post in English.
If you don't mind please edit the post and title in English since the translation is totally wrong, Google translate isn't that good in translating into Chinese.

This patch is really awesome. Earlier this year I have tried to "simulate" 4 lanes road using 4 squares of road so that the buses can cut into the slower lane and won't block the road, therefore the road can be optimized. (t706426.htm) However building road in this way occupies many squares. Using One-way Two-lane road Fun Patch might be a better way to build 4 lanes road. Can vehicles overtake buses that are stopping at a bus stop?

Yes, vehicles pass the bus when they stop at a stop.
This video shows that the patch works for both player vehicles and citycar:
https://www.youtube.com/watch?v=waShbKcFV3s