Edit 1: Banality

[vagabond]

Through streets littered with 
tin cans and chit-chat,
I’m making my way home
on a mellow Tuesday evening.
While I wait for a train
that goes my direction,                nice   metaphor
I decide to add to the mess
by lighting up a cigarette.         See it as a hint to how the surroundings seem connected to the subject in this poem
I inhale deeply as
my lips kiss the bud;
stale smoke numbing my throat
a feeling like that of a sore love-story.      good line. I think you can leave “a feeling” out
Moments pass by like pedestrians   
when I spot a faint rumble    
coming from a near distance;                  
Pa-dum-dum, Pa-dum-dum, Pa-dum-dum
 
It’s that distinct sound
of going home,
presented by a carriage
that is marked with graffiti
and the occasional spot of rust.            
It slowly grinds to a halt
with a loud screech and a whir.         
Its gates squeak open
and out steps its guard.            this is somewhat clear, so could be left out, just continue with "the guard dons.."
He dons that unmistakable         if the guard´s outfit should refer to the subject as well I´d leave "unmistakable" out and either give it another adjective or just pull "that silly hat" into this line and then "the uniform, blue and black" in the next line
colored black and blue respectively.     
He asks for my destination,
to which I softly reply;                     would leave out softly 
“Home, Sir, to Nessingway station".     
I show him my ticket             maybe just "his nod approves of my ticket"
to which he approvingly nods.     
I crack an awkward smile             lets me wonder why awkward.. and relate to the subject by thinking maybe approval is missed otherwise.
while I step inside.
My eye catches a vacant seat         eyes
through the cluttered crowd;
A rugged leather couch with
a piece of fabric tearing out.          I like how the subject´s focus always seems to draw to things torn or worn out; makes me think about the subject´s feelings in an unintrusive way.
I sit down and rest my head
against the glass, staring through.
As the train slowly starts moving,
making that ubiquitous hum:
Pad-dum-dum, Pa-dum-dum, Pa-dum-dum    
 
Through the stained windows    
I spot my vague reflection             to spot/ stain reflections, I like the associations that come up here
Together we see the sunset
accompanied by an ever-changing décor.
As if the credits from the end          this and the next line could fit better into one: comma after décor, then “the end credits of a movie”
 of a movie roll through
with a clichéd title like:
“Another day", starring myself             
while the rails take me
to the end of my destination.     feeling of being just drawn along well described
Instead of the screen turning black,
I get up and step outside,
spotting my reflection in the glass              
one final time, while saying under my breath:
“Goodbye and until tomorrow”     
The train slowly drifts off    
yonder towards a setting sun,
bidding me farewell with that distinct sound:    
Pa-dum-dum, Pa-dum-dum, Pa-dum-dum

i like the  images and the way the subject´s feelings/ considerations show through them.
maybe it could be a little shorter at some points, but overall it´s movement is rolling along well, like the train.