, 7 July 2015 (UTC) 
 :To explain what a CFI is, I heard translated to english and seen fron the Australian point of view expecting lefthand traffic: "CFI is giving the right turning traffic the habits of the left turns". Now give a look on the 2, 3 or 4 phase signals: 
 {| class="wikitable" 
 | align="center" colspan=2 |Number of legs 
 | align="center" rowspan=2 |Signalphases 
 |- 
 | intersection 
 | displaced turns 
 |- 
 | 3||0||3 
 |- 
 | 3||1||2 
 |- 
 | 4||1||4 
 |- 
 | 4||2||3 
 |- 
 | 4||3||3 
 |- 
 | 4||4||2 
 |- 
 |} 
 Where the displaced turns are placed is a question of demand. When increasing the lanes lenght, its efficiency will drop the longer it is cause vehicles are speeding up. Hans Haase  07:13