There is very useful brochure, titled “Police and your basic rights” that must be highly recommended to download for learning or reminding all rights you have got in case police stop you.
For instance if you would be stooped by someone you should ask for identification first of all. You should say: “Please, show me your Police authority card”. There are few authority cards colors:
red one means that the owner is suspender Police Officer then he has no authority to do anything to you.
Blue color – rank of inspector and above
yellow – bellow the rank of inspector
white – Police reserve
and so on.
You can download complete information here -
http://hornbillunleashed.files.wordpress.com/2009/07/redbook-english1.pdf