<p>One is to walk less than four Amos at a time until he reaches the water, as mentioned in the previous ruling.</p>
<hr class="shulchan-footnotes-sep"><section class="shulchan-footnotes"><div class="shulchan-footnotes-body"><ol><li id="shulchan-fn-1">See Piskeiy Teshuvos 1 footnote 53; Miasef Lichol Hamachanos 1:7 says one is to stop the car before continuing to drive another four Amos! <a class="shulchan-fn-back" href="#shulchan-fnref-1" aria-label="Back to text">↩</a></li></ol></div></section>

Shulchan Aruch HaRav | What is one to do if he is sleeping on a bus or car regarding washing hands upon awakening?

One is to walk less than four Amos at a time until he reaches the water, as mentioned in the previous ruling.