I would like to know Is there such the Lot or mod ? where download?

[donicJO]

I look for a long time, but did not find！？
  Please tell me how can download to the lot or MOD? Thank you ！！ 

[Masochist]

You mean the roundabout?  It's part of the Network Addon Mod (NAM), which can be found on the LEX right here.  Also, check out all the other amazing add-ons for the NAM.

[donicJO]

Thank you, I have found it .   
The Network Addon Mod (NAM) is very usefull tools!!!