Lomaster

What prevents $$ and $$$ from moving into a neighborhood besides pollution/undesirable ploppables? I'm having quite a difficult time planning slums, simply obstaining from parks and other enhancer is not enough, as $$ still move in. Even plopping small patches of I nearby won't help. So unless i stuff a lot of industry/power plants in a neighborhood it's residential area rarely becomes a slum. Any advice here?

Could you be more specific please?

So i've been thinking about developing some landfills, coal plants and heavy industry enclave at the outskirts of a city, connected to the mainland only by railroad. And of course some streets in the enclave itself, to link the stations and facilities. The way i figured it was like that: a passenger railway station for employees to get to the enclave and a freight station for waste to get to the landfill. My doubts are: 1) whether waste can travel by railroads 2) whether power plants/ landfills/ industry won't get wealthier employees that hesitate to use mass transit. So my major question is "how vital are roads?" (i'm talking NAM here, but any speculation on vanilla roadless layouts is welcomed)

Ok thanks for replies. To make myself more clear - do residential houses need road connection to their jobs or detatched section of a city where residential houses connected by roads to a train station is enough?