This collection contains interchanges made with North American roads from the USRP (US Road Project) by Feare. The interchanges are built for good functionality with Cities Skylines traffic AI by implementing 'Lane Mathematics'. This ensures easy merging and splitting of traffic within these interchanges and less backups of traffic.

Are you looking for interchanges with Vanilla roads? Then check out my other collection: Collection with Lane Mathematics

The following mods have been used in the creation of these interchanges:

• Fine Road Anarchy
  
• Fine Road Tools
  
• Intersection Marking Tool
  
• Move It!
  
• Node Controler Renewel
  
• Node Spacer
  
• Parallel Road Tool
  
• Precision Engineering

To fully enjoy these interchanges you need to subscribe to a couple of mods. These mods do not affect your games performance. They only add extra very handy tools to your game.

- Some interchanges have roads sunken into the ground. If they show up as tunnels, you'll need the 'Fine Road Tool' mod: Fine Road Tool
- If you want all the markings to be visible: Subscribe to the 'Intersection Marking Tool': Intersection Marking Tool
- Are the highways not aligned as shown in the screenshots? Make sure you've subscribed to the 'Node Controller Renewel' mod: Node Controller Renewal
- The USRP roads have a slightly different color then the other roads. And it's impossible to save different road colors into interchange assets. I advise the use of the 'Road Options' mod to get them all at the same color: Road Options
- I highly recommend the use of TM:PE in combination with these interchanges, especially the service interchanges: Traffic Manager: President Edition
- I highly recommend the use of 'Loading Screen Mod' which improves your game loading time: Loading Screen Mod

Enjoy!

Quick guide to interchanges:

There are basically two types of interchanges. 'Service Interchanges' and 'System Interchanges'.

* System interchanges:
System interchanges are highway-to-highway connections. This mainly comes in the form of two crossing highways connecting with each other (4-directional), or when a new highway starts from an existing one (3-directional). System interchanges are also called 'free-flow interchanges' meaning all traffic can move uninterrupted to each different direction. i.e. no traffic lights or intersections.

The system interchanges in this collection are (or will be) :
- 3-Directional Y-Interchane (3-dir)
- Half-Clover Interchange (3-dir)
- T-Interchange (3-dir)
- Trumpet Interchange (3-dir)
- Y-Interchange (3-dir)

- 2-Level Cloverstack Interchange (4-dir)
- 3-Level Cloverstack Interchange (4-dir)
- Cloverleaf Interchange (4-dir)
- Double Trumpet-Interchange (4 dir)
- Full Diamond Interchange (4-dir)
- Stack Interchange (4-dir)
- Turbine Interchange (4-dir)
- U-turn Interchange (4-dir)


* Service Interchanges:
These interchanges connect a highway to a regular road network. They're the best way to connect your city roads to a highway. However, chosing the right one for the job can be tricky. Unlike system interchanges, most of these interchanges are not free-flow interchanges. This means there usually is one or more intersections with traffic lights present. That said, these type of interchanges are designed to reduce the number of steps these traffic lights have. The traffic lights of a DDI and ParClo A4 for instance, only have two steps, while the SPUI has one traffic light with three steps.

Because these interchanges are placed near, or even within your city, the space around them is very valuable. The different types of service interchanges therefore have very different designs, leaving valuable building space on specific sides of these interchanges (the different ParClo interchanges are a good example of this. The number in their names tells you in how many corners/quadrants of the interchanges on-, and off-ramps are present)

The service interchanges in this collection are (or will be):
- Cloverleaf Service Interchange (free-flow)
- Diamond Interchange
- Diverging Diamond Interchange (DDI) (3-lane one-way nat. road needed)
- Milwaukee A (asymmetrical 4+2 nat.road needed)
- Milwaukee B (asymmetrical 3+2 nat.road needed)
- Partial Cloverleaf Interchange (Parclo A2)
- Partial Cloverleaf Interchange (Parclo A4) (asymmetrical 3+2 nat.road needed)
- Partial Cloverleaf Interchange (Parclo B2)
- Partial Cloverleaf Interchange (Parclo B4) (asymmetrical 3+2 nat.road needed)
- Partial Cloverleaf Interchange (Parclo AB2)
- Partial Cloverleaf Interchange (Parclo AB4) (asymmetrical 3+2 nat.road needed)
- Single Point Urban Interchange (SPUI) (asymmetrical 4+2 nat.road needed)

Keep in mind that interchanges are BIG! Even the smallest interchange takes up a lot of space!!

I havent made all of the designs yet. Over time I will add more, however, for certain interchange types I need USRP road assets that are not availlable (yet).



Want to know how 'Lane mathemetics' work and how to use the functions of TM:PE? I recommend watching some of Biffa's traffic fixing video's at Biffa's city/traffic fixing vids on Youtube