Such options may be:to check at manual barriers the validity of parkers between, say 7 am and 10 am (e.g. staff id, appointment card, details of the patient they are visiting); orto limit the availability of car parking space by keeping certain car parks closed until 10 am and, say, designating car parks "staff only" and "out-patients/day-patients only", andwhere there is no option but to discourage or control the level of unauthorised parking by charging excessive daily rates, arrangements must be put in place to ensure that patients and visitors...