Do you have any responsibilities when opening a vehicle door on a roadway?

• A. No, any following traffic must stop if the door interferes with its progress
• B. Yes, you must not open a door if you are likely to cause danger to road users or impede traffic
  Explanation:

  "Opening a vehicle door presents a significant danger to cyclists, as well as other vehicle users. Always check your mirrors and over your shoulder before opening your door."
• C. No, there is no regulation to cover this situation