Reply To: Split: Chidushim on Daf Yomi

Should be above, most poskim view that cars don’t get included in the count as explained above.

Rav Menashe Klein in Mishneh Halochas (15,124) quotes a later teshuva of Reb Moshe in Igros Moshe O’CH (5,24) where is seems he is retracting his previous view saying that people follow Rashi’s view as the need required to make an airuv of a tzuras hapesach, if 600,000 people are not gathered daily on the street.
According to this ruling we can make an airuv in Brooklyn.