CBS 1 - This is located at Oswestry SJ 246 331. Coverage includes, Shrewsbury, Telford, Welshpool and Wrexham. There is coverage as far as Manchester and Birmingham.

CBS 2 - This is located at Oswestry SJ 246 331. Coverage includes, Shrewsbury, Telford, Welshpool and Wrexham. There is coverage as far as Manchester and Birmingham.

CBS's allowed vehicle to communicate between each other and also talk to a base station. There is an annual fee to use the system and this includes the licence. There are no call cost.