Practice question What do red reflective road studs mark? The dual carriageway central reservationThe centre line where overtaking is allowedThe left edge of the roadA parking bay Answer: C — The left edge of the road The correct answer is shown above. Try the full quiz for additional practice. Practice more: Cayman DVDL Driving Theory Practice Questions - Cayman Islands DVDL Driving Theory Test (Written Examination) Exam →