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SUNDAY, JULY 7, 1985
+UNLIKE THE GREEN ARROWS CURRENTLY USED FOR AHEAD OR LEFT-TURN FILTER MOVEMENTS, WHICH ARE ALWAYS EXTINGUISHED WHEN THE FULL GREEN IS LIT, THE INDICATIVE RIGHT-TURN GREEN ARROW WILL ONLY BE LIT WHEN THE GREEN LIGHT IS ON,+ HE SAID.
J
+WHEN A RIGHT-TURN GREEN ARROW IS LIT, IT ONLY INDICATES TO DRIVERS THAT THE ASPECTS FOR THE ONCOMING OPPOSING TRAFFIC HAS TURNED TO RED, AND MOTORISTS CAN THEREFORE TURN RIGHT UNOPPOSED.
+ IN A SITUATION WHERE THE INDICATIVE GREEN ARROW IS OFF AND ONLY THE GREEN LIGHT IS ON, THIS MEANS THAT THE ASPECTS ARE GREEN FOR THE OPPOSING TRAFFIC FLOW. IN SUCH A CASE, MOTORISTS CAN STILL TURN RIGHT BUT THEY HAVE TO EXERCISE CAUTION WHEN CROSSING THE ONCOMING TRAFFIC,+ MR SIMPSON STRESSED.
UNDER THE PRESENT SIGNALLING ARRANGEMENT AT SOME JUNCTIONS, RIGHT-TURNERS ARE LEFT TO JUDGE NOT ONLY WHEN AN ACCEPTABLE GAP OCCURRED IN THE ONCOMING TRAFFIC FLOW BUT ALSO SIMULTANEOUSLY TO JUDGE WHETHER OR NOT THE ASPECTS HAD TURNED TO RED FOR OPPOSING TRAFFIC. IN LOW OR UNSTABLE TRAFFIC FLOW CONDITIONS, THIS COULD LEAD TO POTENTIALLY HAZARDOUS SITUATIONS.
AT OTHER JUNCTIONS, A SEPARATE PHASE FOR RIGHT-TURNING TRAFFIC IS PROVIDED, I.E., VEHICLES ARE PERMITTED TO TURN RIGHT ONLY WHEN ASPECTS FOR THE ONCOMING TRAFFIC ARE SET TO RED. THIS METHOD OF CONTROL, THOUGH DESIRABLE FROM THE SAFETY POINT OF VIEW, WOULD HOWEVER REDUCE THE CAPACITY AT JUNCTIONS, PARTICULARLY FOR RIGHT- TURNING VEHICLES,
*THE INDICATIVE RIGHT-TURN GREEN ARROW PROVIDES A SIMPLE SOLUTION TO THE PROBLEM AS IT CAN REMOVE HAZARDOUS SITUATIONS AT
IN FACT, THE SIGNAL JUNCTIONS WITHOUT REDUCING TRAFFIC CAPACITY. IN FACT, HAS BEEN WIDELY AND SUCCESSFULLY ADOPTED IN BRITIAN,+ MR SIMPSON NOTED.
HE SAID THE NEW GREEN ARROW WOULD BE INTRODUCED AT 13 OTHER
THE SE JUNCTIONS AT THE RATE OF ABOUT TWO A MONTH AFTER JULY. LOCATIONS INCLUDE: NATHAN ROAD JUNCTION WITH PUBLIC SQUARE STREET, GASCOIGNE ROAD, SALISBURY ROAD AND PEKING ROAD JORDON ROAD JUNCTION WITH COX'S ROAD, FERRY STREET AND GASCOIGNE ROAD WATERLOO ROAD JUNCTION WITH FERRY STREET AND PUI CHING ROAD; LAI CHI KOK ROAD JUNCTION WITH TONKIN STREET, SALISBURY ROAD JUNCTION WITH CHATHAM ROAD, GASCOIGNE ROAD JUNCTION WITH WYLIE ROAD, AND AUSTIN ROAD JUNCTION WITH COX'S ROAD.
THE TRIAL PROGRAMME WILL BE CLOSELY MONITORED BY THE TRAFFIC CONTROL AND SURVEILLANCE DIVISION AS WELL AS THE ROAD SAFETY AND STANDARDS DIVISION.
/Indicative Green .......