5 Stars.

Spoiler: Trics

Autopilot
Low ceiling

Spoiler: Video solution.

Excellent gameplay .
Superb design and nice moves. Lots of trials and errors , but the feeling when I finished the level is joyous . First I was quite skeptical

Spoiler

while pushing the last ball,and how it would work. But wow when that two balls met and B separated them

And here is the five stars from me, complementing your title for the level
Totally enjoyed it

I'm very glad to see a new level from you! Excellent and very interesting as always.
The only addition to the description is that there is one more trick or effect:

Spoiler

the stop star. Or “star pass” is the same thing, but in your case you use it to stop traffic, so the name “stop star” is more suitable.

Cool gameplay. I also liked the two balls at the end - you calculated the blocks and mekorama physics very well for this part of the gameplay.
Of course 5! Well done. Thank you my friend

I was also impressed by the two ball dislodging at 2:34, patience rewarded. Very enjoyable and the star stop was clever.

@Nathan Sabari I was very happy with your feedback, thank you very much for the 5 stars.

@Denis Nazin I'm really happy that you played my new level and for your great review. Thanks for the tip about the effect name.

@ridgerunner I'm very happy with your analysis of my level. It's cool that the movement of the two balls worked well.

Excellent level. The stop star was a bit awkward as I didn't recognize it. But I was able to navigate that by nudging the ball up. Loved the two balls slowly coming to terms with their purpose.

Fun exploring gameplay.

Adding extra star for fantastic ball set-up over Side-Facing-Stair!

@Block builder Thank you very much for the great review. I'm glad you liked my level. You can use autopilot on the star, but your method is also good.

@Pratik Bhalerao Thank you for your attention and great review. I'm glad you liked the idea of the ball on the ladder.

As always a very entertaining level with a cute design... thanks @Jóh great job!

@delator77 Thanks friend for playing the level. I really liked your review

Great level, cool ball moves good fun.