Shalom,
Must someone pullover to recite shema while driving?
Thank you
Answer:
Yes, one must pull over in order to recite the Shema.
Sources:
See Shulchan Aruch O:C 63:3 and the Pri Megadim sk’ 3 משבצות זהב who writes explicitly that one riding a wagon must stop the driving in order concentrate properly for the Shema. See also Shu”t Avnei Yoshphe 5:3:3.