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     SITE NAME BARNARD STREET/MERCY STREET   SITE NO. 6217  
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, C11 1 AØ↔CØ      
2 4 A22 2 AØ→BØ      
3 5, 6 A33 2      
4 3 A44, C22 1, 4 AØ→CØ    
5 8 B11 3      
6 7 B22, C33 3, 6 BØ↔CØ    
7            
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 fewer 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: NOEL RAVEENDRAN           DATE 14/08/13