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Doctors Medicines MCQs Q&A

  1. Only I
  2. Only II and III
  3. Only I and II
  4. Only I and III
  5. All of these
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Option 5 : All of these

All I, II and III follow. Since the signals will automatically change according to the number of vehicles along the road, it will reduce the waiting time at signals and at junctions. It will also solve the traffic woes in the city and ease congestion in the city. Hence, option 5 is the solution. 
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