When the shielded parts of these devices are projected on the vertical plane with respect to the longitudinal reference plane of the vehicle, their sum should not be greater than 15% of the specified field of view
When the shielding parts of these devices are projected on the vertical plane with the longitudinal reference plane of the vehicle, the sum of them shall not be greater than 15% of the specified field of vision
When the shaded parts of these devices are projected on the vertical plane with the longitudinal reference plane of the vehicle, the sum of them should not be more than 15% of the specified visual field.