1. ‘Road vehicles—electrical disturbance by conduction and coupling’, International Standard ISO 7637,
2. EC Council Directive of 20th June 1972 on the approximation of the laws of the Member States relating to the suppression of radio interference produced by spark-ignition engines fitted to motor vehicles 72/245/EEC
3. Home Office Radio Frequency & Communications Planning Unit Specification VIDG 6: A specification relating to the electromagnetic compatibility (EMC) performance of motor vehicles for use by the police and fire services of England and Wales