By Ilaria Grasso Macola Unions have hit back against the government’s decision to press ahead with ensuring minimum service levels during transport strikes. Train drivers’ union Aslef said the measure is doomed to fail as it would only increase chaos at stations. “What happens when 100 per cent of passengers try to get on 40 per cent minimum service level trains? It will look like Japan where they cram people in like cattle!” said general secretary Mick Whelan. “The lack of full establishments – most of the companies don’t have enough drivers to run the services they promise passengers they wi…