Originally Posted by
Recycle
A Motorcycle Safety Foundation instructor here described a mirror as having a one word vocabulary. It can only say "No". If the road behind looks clear in the mirror, you still need to turn your head and do a visual check before changing lanes.
That's pretty much the line in the UK too for motorcycles ... I do use a Take-A-Look on occasions, but never forget to actually look behind. A mirror is only a guide.
If you have difficulty turning your head, leaning forward and looking back helps.