266 5-4 . Using the driving support systems
●When water , snow , dust , etc ., is thrown up in front of the vehicle , or when driving through mist or smoke
●When the headlights are not illuminated while driving in the dark , such as at night or when in a tunnel
●When the lens of a headlight is dirty and illumination is weak
●When the headlights are misaligned
● When a headlight is malfunctioning
●When the headlights of another vehicle , sunlight , or reflected light
shines directly into the front camera
●When the brightness of the surrounding area changes suddenly
●When driving near a TV tower , broadcasting station , electric power plant , radar equipped vehicles , etc ., or other location where strong radio waves or electrical noise may be present
●When a wiper blade is blocking the front camera
●When in a location or near objects which strongly reflect radio waves ,
such as the following :
• Tunnels
• Truss bridges
• Gravel roads
• Rutted , snow-covered roads
• Walls
• Large trucks
• Manhole covers
• Guardrail
• Metal plates
●When near a step or protrusion
●When a detectable vehicle is narrow , such as a small mobility vehicle
●When a detectable vehicle has a small front or rear end , such as an unloaded truck
●When a detectable vehicle has a low front or rear end , such as a low bed trailer
●When a detectable vehicle has extremely high ground clearance
●When a detectable vehicle is carrying a load which protrudes from its cargo area
●When a detectable vehicle has little exposed metal , such as a vehicle which is partially covered with cloth , etc .
●When a detectable vehicle is irregularly shaped , such as a tractor , sidecar , etc .
●When the distance between the vehicle and a detectable vehicle has become extremely short
●When a detectable vehicle is at an angle
●When snow , mud , etc ., is attached to a detectable vehicle
●When driving on the following kinds of roads :
• Roads with sharp curves or winding roads
• Roads with changes in grade , such as sudden inclines or declines
• Roads which is sloped to the left or right
• Roads with deep ruts
• Roads which are rough and unmaintained