Specifications

7-17
likely to be coordinated. There is no coord “hold” applied
to such phases to prevent early max-outs. Once a force
off occurs, the process is no longer required because
phases are theoretically back in step with the
coordinator at that point.
POST TP MAX EXT VALUES.
0 = There is no additional time, phases will use their
normal max times once the TP phase has been
achieved.
1-255 = The additional post TP max time extension in
seconds. For example, if MAX EXT = 10 and the normal
max is 30, then the phase max timer will be initialized to
40 when in effect (i.e. after TP phases have been
achieved).
NOTE: Post TP MAX EXT times should not be confused
with the GROUP MAX times. Group max times are used
when “going to” TP phases and are typically set up to
shorten the normal max’s. MAX EXT times are set up
to add max time to prevent early max outs after TP
phases have been achieved early.
AUTO EXTEND FEATURE
Used to automatically call and extend actuated phases
after transit priority service ends until the first force off
occurs in either ring. Prevents actuated phases from
not receiving a call or gapping out before the platoon
arrives due to early service as a result of TP.
OFF = No auto extend
ON = Phase is called and extended after TP occurs
POST TP MAX EXT AND AUTO EXTEND NOTES
1. These functions are intended for coordinated
operation only. The options are not used during free
operation.
2. The MAX EXT feature applies to only to non-CNA
phases ( actuated, ped recall, or recall max).
3. Both options are disabled when the first force off
following a transit priority occurs. A force off being
issued (in either ring) is an indication that the phases
are back under control of the coordinator and these
special options are no longer required. Once disabled,
the features are not re-invoked until after another
Transit Priority event.
TRANSIT PRIORITY RUN (STATUS) SCREENS
BASIC STATUS SCREEN
This is screen initialized by hitting RUN STATUS.
NORMAL MODE. When no priority transit priority is
active, the display indicates normal operation, such as
normal coordination shown below....
TRANSIT PRIORITY INPUT ACTIVE. Activity of a
transit priority input is shown in the lower right corner.
One or more transit priority inputs may be active (up to
6)....
ALTERNATE TIMER SOURCE INDICATIONS.
While going to a transit priority phase, alternate timing
may be employed (alternate max or Transit priority
Group 1-3). The source of such timing will be
appropriately displayed......
Note that in this example, The walk and max times are
derived from Transit Priority Group 1 and are so
indicated.
TRANSIT PRIORITY PHASES ACHIEVED. When the
transit priority phase associated with an active input has
been achieved in a ring, the screen indicates.....
PHASE/OL 1 2 3 4 5 6 7 8 A B C D| CYCLE
SPO r G r r r G r r r r r r| 1 90
MIN 4 WLK 5 |MIN 4 WLK 5| OFST
MX1 16 PSG 3 |MX1 21 PSG 2| 1 10
PHASE/OL 1 2 3 4 5 6 7 8 A B C D| CYCLE
SPO r G r r r G r r r r r r| 1 90
MIN 4 WLK 5 |MIN 4 WLK 5| TPR
MX1 16 PSG 3 |MX1 21 PSG 2| 1
PHASE/OL 1 2 3 4 5 6 7 8 A B C D| CYCLE
SPO r G r r r G r r r r r r| 1 90
MIN 4 WLK 5 |MIN 4 WLK 5| TPR
TG1 12 PSG 3 |TG1 14 PSG 2| 1
PHASE/OL 1 2 3 4 5 6 7 8 A B C D| CYCLE
SPO r G r r r G r r r r r r| 1 90
MIN 4 WLK 5|MIN 4 WLK 5| TPR
MX1 16 TPR PHS|MX1 21 TPR PHS| 1