yes even sims about walking distance from home to work, i noticed that commute times are long.... this happens when they have to travel to work and the road is inclined, meaning my ID-HT is on a higher ground.while freight trucks that have to cross a bridge to the nearest freight train station commute times can sometimes be short... is under 50 mins commute time in a city pop of 50,000 good enough? i've noticed that what once was an hour in average commute time was reduced by installing subways and bus stops at the most congested areas of the city.(avenues, arterial roads in suburbs etc.)
i think even if sims have to travel quite a bit of distance from home to work, as long as the commute times are decent, you won't see too much abandonments... subway networks or any other efficient mass transit can significantly reduce commute times...R$$$ are really picky though as almost all of them drive cars(a few take subways), thus commute times are long. it just takes some time for R$ and R$$ to learn to appreciate subways.... try the subway/bus stop waiting station combined instead of the usual bus stop beside the subway in a city block. works quite well for me. some stops have as much as 700-800 sims taking it at the most congested parts of my city..