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     SITE NAME MACKENZIE ST WEST/BAY ST/SYMONDS ST   SITE NO. 6260  
APPROACH DEFINITIONS  
   
PHASE APPROACHES        
Approach No EXTENDING DETECTORS APPROACH TIMER AND TIMESETTING DEFINITION* SIGNAL GROUP APPROACH EXPIRY (EXPAP) Refer Special Notes  
1 1,2 A11 1        
2 3 A22 1        
3 4 A33, C22 2, 5 AØ ↔ CØ    
4 5 A44 2      
5 6 A52 2      
6 7,8 B11 3      
7 9,10 C11 4      
8            
9            
10            
11            
12            
13            
14            
15            
16            
       
  *  There are 8 approach timers and 4 approach timesettings available per phase:  
     - Where there are 4 or less approaches per phase, allocate one timesetting to each timer.  
       For example: A11. A22, A33, B11, C11.  
     - Where there are more than 4 approaches per phase, two or more timers must have the same timesetting.  
       For example: A11. A21, A32, A43, A54, B11.  
       
SPECIAL APPROACHES        
Approach No EXTENDING DETECTORS APPROACH TIMESETTING SIGNAL GROUP DESCRIPTION Refer Special Notes  
1            
2            
3            
4            
                                         
DESIGNED BY: TAN HUA SOH           DATE 16/03/05  
G:\TMC Opsheets\Pending\[6260.htm]Approach