Redesign and improve the pelican crossing ladder diagram attached by adding timer rungs and counter...

Question

Redesign and improve the pelican crossing ladder diagram attached by adding timer rungs and counter rungs between rungs 12 and 14 (or any similar workable scheme) together with the necessary contacts inserted in the amber and green man lights of rungs 7 and 10, etc. The chart below shows the required sequence of events. Note that a section of the chart is repeated a total of 16 times. The time intervals are given below.
Time periods XXXXXXXXXX 37 Green road light ON ON OFF OFF OFF OFF ..... OFF OFF ON Red road light OFF OFF OFF ON OFF OFF OFF OFF OFF Amber road light OFF OFF ON OFF ON OFF ..... ON OFF OFF Wait sign OFF ON ON OFF OFF OFF ...._ OFF OFF OFF Green man OFF OFF OFF ON ON OFF ON OFF OFF Red man ON ON ON OFF OFF OFF ..... OFF OFF ON first sixteenth occurrence time Time period 1 is the 'normal' conditions. Time period 2 is after the pedestrian presses the push button. The change from period 2 to period 3 can only be made after at least one five second check of the road sensors. The time interval between 3 and 4 is 4 seconds. The time interval between 4 and 5 is 10 seconds. The time interval between 5 and 6 is 0.5 seconds. The time interval between 6 and 7 is 0.5 seconds. It is not necessary to show the whole of the traffic light ladder diagram shown, only rungs which have been modified. There must, however, be a comprehensive explanation of the operation of the modified rungs accompanying the modified ladder diagram.
1
XXXXXXXXXX
7
9
10 II
12
:3
14
S
Ladder Diagram of pelican crossing.
XXXXXXXXXXRM R000
XXXXXXXXXXjedr—OYQ°6 1004 WAIT SIGN II 3' ROW 219°4, XXXXXXXXXXS seer)
TTMOD R003 R001
• 1 ROOI _frr Y0051590S0 kf Y007
Y0125 • I I R°°2
7007
R002
GREEN LIGHT
7000 RED Mill
MISER LIGHT
505 U TIMOI (4 seta) 7006 RED LIGHT 7000 Y XXXXXXXXXXGREEN MAN 3.E.006eFOwo 77MO2 (10 sees)
27MO2..r__C)Re93 R002
18002 R002 O TIM03 (3 seer) TI140.3._07000 Roo Y007 I Y021 I1'0113_1 1'001-0 R009

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Robert · Accepted Answer

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Redesign and improve the pelican crossing ladder diagram attached by adding timer rungs and counter rungs between rungs 12 and 14 (or any similar workable scheme) together with the necessary contacts...

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