Yokohama Northwest Route
... that the Yokohama Northwest Route features a 4.1-kilometer-long (2.5 mi) tunnel equipped with emergency escape slides?
... that the <b id="mwgw"><a href="./Yokohama_Northwest_Route" id="mwhA" rel="mw:WikiLink" title="Yokohama Northwest Route">Yokohama Northwest Route</a></b> features a <span about="#mwt22" data-mw='{"parts":[{"template":{"target":{"wt":"Convert","href":"./Template:Convert"},"params":{"1":{"wt":"4.1"},"2":{"wt":"km"},"3":{"wt":"mi"},"adj":{"wt":"mid"},"4":{"wt":"-long"},"sp":{"wt":"us"}},"i":0}}]}' id="mwhQ" typeof="mw:Transclusion">4.1-kilometer-long (2.5</span><span about="#mwt22" typeof="mw:Entity"> </span><span about="#mwt22">mi)</span> tunnel equipped with emergency escape slides?