One de ice truck for any aircraft in falling snow is stupid.
De ice trucks that have technical problems is not good enough.
De ice truck that runs out of fuel whilst de icing an aircraft is careless.
All of the above happend to one particular aircraft yesterday but they were one of the lucky ones as they were only 3 hours late.
In falling snow remote de icing at the runway with two trucks, one either side of the aircraft is a must. Hold over times were around 30 mins yesterday in those conditions.
The airport, airlines and service companies need to come up with a solution that works and all take joint responsibility.