Ice Road Truckers- Alaska series

[iguana]

Seen the Canadian ones before, but am puzzled on the Alaska series however, as I belive the Dalton is open in the summer? - unlike the Canadian across the lakes & ocean roads, so why the rush to get it done in the winter window? esp with those conditions.

Supprised Alaska law allows 15 hour hgv driver hours in those conditions! vs 9 hrs under euro trucking laws (2x10 hrs)