This road sign means: Question This road sign means: Answers The left lane is reserved for vehicles with a specific number of occupants. Specific turning movements are allowed from specific lanes. Do not enter. Drivers in both lanes are responsible for merging smoothly. Explanation This sign marks a high occupancy vehicle (HOV) lane. HOV lanes are reserved for use by buses and vehicles with a driver and one or more passengers, as indicated on the sign. This questions appears in the following tests: Wisconsin Motorcycle Practice Test 13