Home / Newfoundland and Labrador / Questions / Road Signs Road Signs Report A white diamond on blue background in a lane indicates: A Parking B High-occupancy vehicle lane — minimum occupants required C Bike lane D Bus-only Show Answer & Explanation Correct Answer: B. High-occupancy vehicle lane — minimum occupants required Less common in NL but may exist. Previous More Road Signs Questions A yellow diamond with STOP icon means: A yellow plate '50 km/h' under a curve warning sign is: A sign 'PLAYGROUND ZONE ENDS' means: A yellow diamond with YIELD icon means: A sign 'PHOTO ENFORCED' means: Often Missed All Newfoundland and Labrador Questions Smart Practice Mock Exam Road Signs Guide