Who are "Rochvei Asonos Tzechoros"?
Rashi: They are merchants and officers who may now ride on esteemed white donkeys without fear.
Malbim: They are rich merchants who ride on white donkeys for business.
Who are "Yoshvei Al Midin"?
Rashi: They are judges, who used to fear to judge in public.
Radak: Midin is a place mentioned in Yehoshua (15:61, amidst cities of Yehudah), or it is a place that was known to them; previously they feared to go there.
Radak citing Mesorah: Midin is written in three places - in Yehoshua (15:61, amidst cities of Yehudah), here, and "Lehatos Midin Dalim" (Yeshayah 10:2). They are [respectively] a city, a path, and judgment.
Malbim: They are judges and people who engage in Torah.
Who are "Holchim Al Derech"?
Malbim: They are the poor, who go to seek income.
What is the meaning of "Sichu"?
Rashi: Talk about this salvation.
Radak: Talk and sing to Hashem.
Malbim: Discuss Hashem's wonders.
