Which lines from "Dawn in New York" suggest that the morning commute is beginning?

Question

The Dawn! The Dawn! The crimson-tinted, comes
Out of the low still skies, over the hills,
Almost the mighty city is asleep,
No pushing crowd, no tramping, tramping feet.
But here and there a few cars groaning creep
Along, above, and underneath the street,
Their eyes weakened and their clothes awry,
Grotesques beneath the strong electric lights.

Answer 1

The lines that suggest the morning commute is beginning include:

"But here and there a few cars groaning creep
Along, above, and underneath the street,
Their eyes weakened and their clothes awry,
Grotesques beneath the strong electric lights."

These lines indicate the presence of cars and the weariness of people, signaling the start of the day and the commute. The mention of cars "creeping" along and the description of people with "weakened" eyes implies they are beginning to move, likely towards work.