§ Mr. Wilsonasked the Solicitor-General for Scotland if he will provide figures of usage and successes or failures of breath meters in drink-driving cases.
§ The Solicitor-General for ScotlandStatistics recording instances of use and the results of such use of the Camic Breath Analyser (S) throughout Scotland are not kept. At every police station where the device is used, a record of its use is maintained, but statistics are not kept centrally. Lothian and Borders police have compiled figures recording the use of the camic device between 6 May 1983 and 31 December 1983. The results are as undernoted.
percentage Number of accused 1,560 Number of tests 1,590 Tests Completed 1,396 87.8 Incomplete 194 12.2 1,590 100.0 Completed Tests Lower Readings 35 Ug & Under 189 11.9 36–40 Ug 56 3.5 41–50 Ug 154 9.7 51 Ug & over 997 62.7 1,396 87.8 Incompleted Tests Refusal 32 2.0 Breath Invalid 85 5.4 Calibration Check No. 1 out 27 1.7 Calibration Check No. 2 out 40 2.5 Device failed 10 0.6 194 12.2 Difference between Readings 0–5 Ug 1,148 82.2 6—10 Ug 188 13.5 11–15 Ug 35 2.5 16–20 Ug 15 1.1 21–25 Ug 4 0.3 26 Ug and over 6 0.4 1,396 100.0 or alternatively 0–30 per cent. 1,336 95.7 Over 30 per cent. 60 4.3 1,396 100.0