Explanation: An illness that could affect you while you're driving, such as a heart condition, may make it unsafe for you to drive. You must tell DVLA if you develop any serious illness or disability that's likely to last more than three months and that could affect your driving. Partial blindness and mental disorders can also prevent you from getting a driving licence for large vehicles.
Category: The Driver
References: The Official DVSA Guide to Driving Buses and Coaches: Section 1, The Official DVSA Guide to Driving Goods Vehicles: Section 1