@zerokiller : There is some problem with Cities Skylines and/or Steam.

FIRST :
On the side, I put all the DLC and assets/mods what this ring road needs.
It requires 4 assets or/mods.
But Steam only put mark on Parking Lot Roads.
I was checking and I have all of them in the game. Maybe something wrong with Steam/Cities Skylines.

SECOND :
On my side, everything is correct and maybe because I am the creator. So, I do not know what is going on with it. Maybe because Steam do not downloading properly the assets/mods.
That's is why it shown than ETST, One-way Train Tracks, Railway Replacer are not marked.

@zerokiller : There is some problem with Cities Skylines and/or Steam.

THIRD :
Maybe Steam/Cities Skylines had problem because I had some problem yesterday when I try to create payable parkings (as toll booth parkings) and metro station (subway station/underground station) with Creator edition.

FOURTH
If you wish, I can create another one without any assets/mods. So, it will be without parkings and one-way railway tracks.

LAST :
Just keep me inform. Thanks in advance.

@mjm92150 thank you for your help, but I still dont have this asset.. I have all dlc and mods listed by you. I don't know what happed.

@zerokiller : I add the mods in the description with their link.
Keep me inform is something is missing or not.
Tanks.

@zerokiller : Here you are a list of some others mods I used
- ETST by BloodyPenduin
- Network Skins 2 by boformer
- Network tilling br Ronyx69
- One-Way Tracks by BloodyPenduin
- Railway Replacer by Ronyx69

I will add them in the description. Normally, is going to right.
Just keep me inform if there is any problem or not.
Thanks.

@zerokiller : I am sorry about that. I have many DLC (see above all I had in the description) and MOD. I will check all my mods and keep you inform.
Then, I will put in the description or/and add in equipment required as I did for : Parking Lot Roads.
Is going to take time to check it because is not yet my priority at the present moment but I will try to doing my best asap.
I thought it was part of : Network Extension 2 and/or Track replacer ?

sorry, i couldn't fix the problem.
The messege that appears on the Loading Screen Mod is that the asset are missing and the Rail1L2W is possibly DLC or mod content.

@zerokiller : See the 3 (third) and 2 (second) last copy screen. There is rail track I use for this intersection who are :
- Single rail (is written : Single Two-Way Rail),
- Double rail (is written : Two Lane Two-Way Rail ).
Tell me if it's right or not for you ?

Missing asset Rail1L2W