There is a link in the thread below that will demonstrate how one can keep soft loops, or the open steel hooks, secure.
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Well...... chances are at lottery odds for a bike to enter the passenger area as the wheel is up against the interior front of the pickup bed negating any “ramming” action of the bike.
Passenger vans, for the most part, do not have a “service wall” between the front seating area as required for commercial vans.
Fairly important to have an anchored front wheel chock in a van.
I find it a good idea to leave the bike in first gear.
I find it a good idea to lash the front wheel to the secured front wheel chock.
I find it a good idea to use tie-downs on the rear especially if the floor surface is smooth.
I find it a good idea to close the “open” end of the tie-downs with a wrap of electrical tape to prevent a jump off of the hook under the “recoil” of an unexpected dip in the road.
One of the best threads on tie-downs and bike hauling is here-
https://forums.bmwmoa.org/showthread.php?88430-U-Haul-motorycle-trailer
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