Hi V.K
Hope you are doing good!!
It may sound a little kiddish, but without making this topic and solution more complex and by judging the traffic sense and ethics of public i would recommend hard barriers as seen on railway crossings (Auto/Manual), so that when ever there is a Red signal these barriers will stop people crossing the intersection and let the people/vehicle in other direction move easily without pulling breaks while crossing the intersection (Which usually happens as people who have been shown the red signal don't stop)
Once the traffic has been cleared let the barriers open for other direction. This will also help to the people crossing footpath and will also help to reduce accidents.
Now it's up to installers, how they want this to operate, manually or automatically. I will suggest let's try this by doing so manually first and if succeeded then can install an automatic system.
Now, coming to the point, for your question, i will say that in our traffic system we have both ways, an automatic signal system as well as police men to put some manual efforts, however this will tell us different stories at different places, at some places its working properly while at some places this doesn't work. I would like to recommend that the automatic system is working properly, however, the manual efforts are needed there so that the situation can be handled appropriately.
Regards,
Durgesh