They need to pace the trucks. Open staging areas far enough removed from the migrant camps to eliminate interference. Use patrols to watch for non-living obstructions. Release trucks at a measured rate to ensure speeds of at least 55 mph as they enter the tunnel. Add signage to warn that anyone on the roadway near the tunnel is subject to action up to and including immediate extermination. Stage water cannons in the area to wash off the roadway as needed.
It’s up to the truck owners to add bull bars.
Release trucks at a measured rate to ensure speeds of at least 55 mph as they enter the tunnel.
That’s not how it works.