If you ask me whether there is an effect from that red colour light on a person's life my answer is both "yes" and "no". No because it is just a light. Yes, because it indicates a bad period to cross, But if you attribute a godly character to the traffic light pole and starts worshipping it or think that there is a mystery in it. Then it is the  lack of true knowledge and understanding. That is why, about 2500 years ago Lord Buddha said "Kim karrisatthi Tarka ?" What stars can do ? It is not stars doing any this to you. It is  your own actions and the reactions of past actions (Karmas) are shaping your destiny. your true savior is none but yourself as it is your duty to steer your life on the correct path.
 

Astrology is system of observations gathered through ages. For an example Vedic astrology was founded by sage Parashara thousands of years ago and the observatins collected through ages  are essance of Hindu Astrology. Astrology, both Eastern and western are based on a predictive system very similar to the one used by materorology. Instead of forecasting the weather conditions, Astrological predictive system indicated such and such things are highly probable to happen to the  people when such and such planetary positions are prevailing.

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