Describe the operation of the new speed trap by converting each of these statements to the Present passive. Add information on the agent where you think it is necessary. 1 The first unit records the time each vehicle passes.
2 It identifies each vehicle by its number plates using OCR software.

3 It relays the information to the second unit.
4. The second unit also records the time each vehicle passes.
5. The microprocessor calculates the time taken to travel between the units.

6. It relays the registration numbers of speeding vehicles to police headquarters.

7. A computer matches each vehicle with the DVLC database.

8. It prints off a letter to the vehicle owners using mailmerge.