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FOI 7662 TETRA to EE mobile network

Ref No: FOI 7662

Category: ICT / Information Management




I write in connection with your request for information which was received on 13th September 2016. Please find below the response to your request:

I am looking to understand the West Mercia Police readiness and costs associated with the change from the TETRA communications network to the EE mobile network. Please could you provide answers to the following questions;

1.        Could you please confirm the typical data Communications technology installed on-board Police Vehicles. I am particularly interested in the squad cars, motorway vehicles and Command Units.

2.       What is (are) the purpose(s) of the communications technology, for example; GPS tracking of appliance, Telematics, On-Board Diagnostics, Status update, Vehicle registration look up, suspect look up, communicating with other vehicles/back to base, event-based streaming of video etc?

3.       Do you currently make use of CCTV and/or dash cameras on police vehicles?

4.       Do you currently use body cameras or body sensors to help protect police from harm / get better visuals / evidence on the incident? If not, do you plan to utilise this technology in the future?

5.       Do the units make use of the TETRA network or standard mobile communications?

6. Any particular police specifications/standards that your on-board data equipment need to comply with? ISO standards as an example? 

7.       If the TETRA network is being used, is the hardware compatible with standard mobile communications technology? If not, can the unit(s) be updated or do they need to be replaced entirely to facilitate the change to mobile communications.

 8.       Could you please confirm the model of the communications unit(s) being used and the supplier(s) of those units?

9.       Could you confirm the contract terms these units have been bought on - was this a one-off CAPEX charge or a mixture of CAPEX and OPEX?

10.       Please could you confirm the cost of the units, both CAPEX and OPEX?

11.   Could you please confirm who installs and maintains the units?

12.   Could you confirm when the current contract term(s) come to an end?

13.   Could you please confirm who within the Police Department is responsible for procuring the units?



REPLY 1: There is a limited deployment of on board Microbus computers which allow remote access to police systems; In addition to this there are Tetra tab terminals which can be docked in some Vehicles.  

All operational vehicles are installed with an Airwave radio for Communications and Vehicle location purposes.

The force also currently fits a Siemens VDO incident data recorder that records information if the vehicles are involved in a collision. This is to be superseded by a full Telematics system (the project for this is in it's very early stages) that will be used to promote the Efficient, Effective and Safe use of Police assets and assist in the overall management of the fleet.

REPLY 2: Communicating with police computer systems and ANPR, in vehicle CCTV and external CCTV recording, Radio communications, Vehicle location

REPLY 3: A small number have CCTV recording facilities.

REPLY 4: Warwickshire Police and West Mercia Police force Alliance do not currently use body cameras or body sensors. Both Forces are jointly undertaking work to look at the feasibility of deploying body worn video technology in the future.5.       Do the units make use of the TETRA network or standard mobile communications?

REPLY 5: Standard mobile network comms for in vehicle systems with the exception of Radio which uses Tetra.   

REPLY 6: Compliance with and not limited to NASP, CAST and any other appropriate Home Office and European standards. The force would expect any future changes in legislation to be incorporated into any new solution. 

REPLY 7: Airwave/Tetra is only used for Radio comms and location services . These would need to be replaced once the transition to ESN has occurred.

REPLY 8: Standard in car Airwave radio is a Cleartone CM9000P

REPLY 9: One off Capex

REPLY 10: £492 per unit purchase cost

REPLY 11: Installed and maintained by an in house team

REPLY 12: No contract

REPLY 13: Ann Church, Head of Contracts and Procurement