Breathalyser tests

Freedom of Information (FOI) Act request ref: 01/FOI/23/5098 

Version Date: 20/07/2023

The Performance & Analysis Department have provided the following information.

Data Source:

Roadside breath test data from Lion 500B breath boxes.

Custody recording system -  UNIFI

Data Processing:

Qlikview report "Breath Tests", filtered on Date of Test 01/01/2021 to 30/06/2023

Further filtered on:

Mode: "Road";

Reason: all values except blanks;

Test: "Pass", "Warn", "Fail" and "Zero" for overall number of roadside breath tests.

Qlikview UNIFI - Custody Data report

Arrest date 01/01/2021 to 14/11/2022

• All Arrest Reasons - Drunk in charge of a Motor Vehicle / Positive Breath Test / Fail to Provide Breath Test
• Most serious outcome – Charged / Postal charge

Data limitations:

Custody outcome data is only available to 14/11/2022

Note:

Vehicle type is not recorded in the data available to Performance and Analysis.

The total number of motorists of all categories – cars, vans, lorries, motorbikes and other – that were stopped by police in 2021, 2022 and 2023 (year to date) and asked to undergo a breathalyser test for alcohol. If possible, please break down by gender and time of day

Total roadside breath tests in the Force area 1st January 2021 to 30th June 2023 

 The total number of motorists of all categories – cars, vans, lorries, motorbikes and other – that were stopped by police in 2022 and 2021, asked to undergo an alcohol breathalyser test and failed the test. If possible, please break down by gender and time of day.

Total failed breath tests in the Force area 1st January 2021 to 30th June 2023 

 The total number of motorists of all categories – cars, vans, lorries, motorbikes and other – that were stopped by police in 2022, 2021 and 2023 (year to date) and charged for failing an alcohol breathalyser test, If possible, please break down by gender and time of day.

Total arrests charged for positive/refusal/fail to provide breath tests in the Force area 1st January 2021 to 14th November 2022