Common Trips
16. From Yerushalayim. When leaving Yerushalayim [on Highway 1], e.g., to Bnei Brak and beyond, Beit Shemesh, Ben Gurion Airport, Modiin Illit, etc., one should say Tefilas Haderech, as these places are more than a parsah away. It can be said when one is on the highway past Har Hamenuchos, which is within a parsah. It does not matter if there are still some houses at the side of the road since practically speaking, this is out of the city and we need Hashem to protect us from the risk of accident (above, 14).
17. One should certainly say Tefilas Haderech immediately upon leaving the city when using roads closer to Arab neighborhoods [e.g., the 443 or the highway to Yam Hamelach].
18. Cities near Yerushalayim. Even when traveling to cities near Yerushalayim, Tefilas Haderech is said if the trip is at least a parsah according to all poskim [4.6km], e.g., to Telz-Stone, and certainly to Maaleh Adumim, or Beitar Illit as the road passes Arab neighborhoods.
19. From Bnei Brak. When leaving Bnei Brak, one should say Tefilas Haderech as soon as he is on the highway [the 4]. Even though there are houses around, this is already outside the city and a place of potential risk (כך נהגו החזו"א ובעל אבי עזרי ועוד, קובץ מבקשי תורה חשון תשס").
20. Highway within city. When driving on a highway within a city [e.g. the Begin, which crosses through Jerusalem, or in a city like New York], even though there is a risk of accident, since it is in the city, we do not innovate or add onto what Chazal instituted. Thus, Tefilas Haderech is only said when traveling outside a city.