A sign at a local car park. "This is H.D.C Pay and Display Car Park". The H.D.C refers Huntingdonshire District Council in Cambridgeshire, being the local authority. This is a bit of local shorthand. Fine if you'e a local resident, but if you're a visitor to this market town of a 1000 years, there's no reason you'd know what the HDC might stand for. "Council" might be a better and more inclusive description. Otherwise it might be tempting to consider what else the HDC might otherwise stand for...high daily charge, even hairy doored cars.