When your sense of direction needs a new compass, an extra pair of eyes and hands to turn the pages of a map (or you need to get one of those GPS things first) then the best way to get into the city where the roads can confuse you would be to take the train, otherwise known as the Komuter.
I took an early train for a day long training stint the other day because I had to switch trains at the main station in KL, and was unable to predict the time I might need (plus the fact that frequent users always complain about how the train is almost always delayed and the intervals between trains is 20 minutes), which was a good thing because apparently, there was a massive delay in the later trains (technical problems, they said). I stood at the corner of the coach I got in, leaning against the coach and my right side against the back of someone's chair while I listened to whatever that was playing on my mp3 player.
After just about 4 or 5 stops, the train was so packed that I was squeezed into my corner by a lady who could sleep standing up and a guy whose bag kept poking me. By the time we reached towards KL, the train could not accommodate anyone anymore. I saw a few school kids stare dejectedly as the train moved on, leaving them behind to catch another much delayed train, and my heart went out to them because some schools have terrible late-coming rules. In my secondary school, if you arrived late three times, you'll be made to wash the school toilets with a few others, and trust me when I say that washing the school toilet is a gazillion times worse than washing your toilet at home.
After almost an hour, I finally hobbled out of the train, thankful for the *fresh air in the station, and proceeded to another platform for another train that will lead me to my destination. I only did it at peak hours this one time, and it wasn't such a big issue for me. Standing in a corner, or hobbling out, but imagine doing it day after day for so many years.
I occasionally like to do a spot of people watching which I did that morning, and everyone looked like zombies, with their headphones over their ears, staring listlessly over the heads (or the back of the necks) of the person standing in front of them. Very few read (I believe for fear of losing balance), but one woman actually managed to read the reader's digest while standing up!
* the train station is an enclosed building, so I doubt the air is really fresh, but it is definirely much fresher than the air inside the train.