Congestion Medium2

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Congestion Charges: medium questions

For each "internal" camera show the following details -

  • the number of images taken
  • the time of the first image
  • the time of the last image

(the internal cameras have a null value for the perim attribute)


Obtain a list of every vehicle passing camera 10 on 25th Feb 2003. Show the time, the registration and the name of the keeper if available.


Obtain a list showing the total number of images taken hour by hour for cameras 18 and 19


For each of the vehicles caught by camera 18 - show the registration, the earliest time at camera 18 and the time and camera at which it left the zone.


For all 19 cameras - show the position as IN, OUT or INTERNAL and the busiest hour for that camera.