Basic walkthrough for "Traffic" (spoilers)
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examine box (this queues the traffic planner sequence)
examine stroller (this queues the baby sequence)
examine bus (this queues the bus sequence)
wait until you are hit

*traffic planner sequence

unlock box
open box
ask man for screwdriver
open panel 
push button

[there are at least 2 other ways to solve the traffic planner sequence]

*bus sequence

turn off boombox
open window
give seat to woman

[there's one additional way to reduce the woman's stress levels]

*baby sequence

search blanket
get pacifier
throw pacifier at phone

[there's at least two other ways to solve the baby sequence]

*back in main loop

examine cab
wait until you are hit

*cab sequence
n (or "drive n") [4 times, make sure you hear about Sarah on the radio]
n 

*back in main loop

examine student driver
wait until you are hit

*student driver sequence

young man, drive n [4 times]
young man, stop [2 times]

[there are multiple ways to solve cab + student driver scenario, but it depends on what actions you take. Keep in mind the student driver car "moves first"]

*back in main loop

wait until you are (not) hit

*elevator sequence

think about Sarah
break package

[if you do not break the package you will get one ending to the game]

*back in main loop

examine school
examine girl
wait until you are hit (on purpose)

*sarah sequence

look under bed
push ball to Sarah
wait [4 times, to listen to Sarah's situation]
bark twice [use that phrase exactly, don't bark, then bark again]

[there's at least 1 more way to get Sarah's attention initially]

*back in main loop

wait until you are (not) hit