Dumb artillery and heavy-mortar rounds are a waste of tonnage. Ditto towed guns. No more area fires. Everything must be shoot and scoot, most everything should be precision. Each shell is individually targeted. So, fewer guns will be needed per battery...maybe just one or two...and there will be much less tonnage of ammo movement.
There are still times when you need mass of fire, not just precision. This generally means MLRS type volleys.
The classic example would be a BTG or MRR going from road march to attack formations.
Precision shots take out the SAM units covering that marshalling area. MLRS delivers enough antitank skeets to hit every vehicle while tac air is en route to clean up.
And based on Ukrainian consumption of 155mm shells, to the extent of burning out barrels in PzH2000s even with the UkrArmy using the PzH2ks "as designed" with a volley of 6-10 rounds before displacing, you really need to plan on a LOT MORE ammunition consumption than what's been happening, not less.
Rails are surprisingly hard to destroy long-term, barring bridges and tunnels. And bridges and tunnels are equally threatening to truck travel.
Railroad operators have all the equipment to repair or replace damaged track already. Once a conflict starts, you simply run a couple of flatcars at the head of the train to carry replacement rails and ties, and a hopper car to carry more ballast.
No limitation to Grade 1 highways. All truck movement, and extensive usage of secondary and tertiary roads. Constantly changing routes. Route all trucks singly...no convoys.
That's generally correct, but rearming more than a platoon of tanks takes more than one truck at a time. Refueling and rearming takes two separate trucks.
once upon a time, this would have given the Poles night sweats
Now, it's the thought of being a Russian slave state that gives Poles nightmares...