(1) For the vehicles with an arm-type lift installed on the rear as an option (arm-type gate lift trucks), the reversing lights are not installed at appropriate positions, and therefore, they are not visible enough to meet the safety standards for trucks. (2) For the vehicles with a vertical-type lift installed on the rear as an option (vertical-type gate lift trucks), the rear direction indicators are not installed at appropriate positions, and therefore, they are not visible enough to meet the safety standards for trucks.