Section 15.27 Sample Crosses by Topic

• Library: DWI 2014 FORMS

Radar Cross Examination Questions

Calibration

1. What radar unit were you operating that day?

2. Was it a stationary or mobile radar unit?

3. If stationary, was it hand-held or mounted in the vehicle?

4. What model and serial number?

5. Are you trained or certified in its operation?

6. Is there a certificate from the radar unit’s last re-certification? Can I see it?

7. How long ago was it re-certified?

Tuning Fork(s)

8. Did you perform an external verification of the radar using a tuning fork(s)?

9. What is the serial number of the tuning fork(s)?

10. What value(s) is it supposed to produce when it is struck?

11. What value did it actually produce when you verified the radar?

12. How long has it been since the tuning fork was recertified positive on accuracy of frequency?

13. Is there a certificate stating its verification?

14. Is it still free from dings or dents that would otherwise affect its accuracy?

15. What sort of surface did you strike it on to produce the vibrational frequency?

a. Does this surface damage the fork? (too hard)

b. Does this surface create the proper vibration to perform an adequate verification test? (too soft)

Internal Device Quality and Accuracy Checks/Tests

16. Did you perform an internal standards check on it at the beginning of the shift?

a. What values were tested?

b. What were the results?

17. Did you do these internal and external checks periodically on the unit during the day?

18. Did you do these internal and external checks at the end of the day?

a. What were the results?

19. Do you have any way of verifying the accuracy of the radar for that day?

Operation of the Device

20. How far away from the target vehicle were you when you first observed it?

21. How many other vehicles were around that vehicle?

22. Were there any larger vehicles, or smaller faster vehicles, in the vicinity that may have been the reflective source of the radar reading?

a. How...