The 20 daily transits across 11 flag states are the operational reality the ceasefire's 'coordinated passage' clause now ratifies. Iran's permanent customs authority over the strait, legislated in late March , turned out to be the architecture both sides have now signed onto.
The recovery from near-zero transits in late March to 20/day by 5 April happened through individual bilateral toll deals, not through any US enforcement action. Trump's Truth Social formulation that the US 'will be helping with the traffic buildup in the Strait of Hormuz' aligns the rhetoric with the operating reality.
