Traffic died after building highway

[Zymes 2]

I got NAM installed and have this issue.

With a custom map I use the biggest tile pieces for each city.

I used to have normal black roads going from top city (commercial, some residential), through middle (residential) and to the bot (dirty industry). They actually drove all the way down. This caused me to have red traffic congestion so I built highway running through the city.

Then they stopped travelling there!

The middle city have almost all the residential zones, so traveling to the dirty industry zone at bot is closer but they wont. And the dirty industry demand is really high.

They refuse to travel from middle to bot and have unemployment. A lot of it.

How can I fix this? More highways? Why would they stop travel to bottom after removing normal roads?

[Moskva 75]

I am confused by your problem, can't you show us a picture? Have you provided a decent amount of ramps and interchanges with the highway? This is weird check for mistakes in your network.

[Ceraton 1,244]

I have to agree here with Moskva. Maybe it is a glitch, or maybe you did something wrong, but we can't give a diagnosis unless you show us a picture. Click Prt Sc (only works for Windows) or take a regional picture, then upload it here.

[jacksunny 741]

You should also ensure your game is fully updated. Did you simulate ahead a few months after building the highway?

[A Nonny Moose 8,261]

Is this a Maxis highway or an RHW? If an RHW did you build the appropriate ramps and use transition pieces as required?

[AIX 270]

I would like to see a picture too.

I build highways using the RHW frequently, so one tool I have come to LOVE is the Extra Cheats DLL (it's on the STEX). It has a function called "Draw Paths" which will put arrows along your highway showing where commuters can drive. I use this all the time to detect "breaks" or other glitches in my highways. I can go into more details on using this if you want.