Sadiq Khan plots 'pay-as-you-drive' scheme using Ulez cameras: London Mayor asks TFL to look into developing plan to use more 'sophisticated technology' to charge road users

… in which more 'sophisticated technology'; could be used to … a network of 'Singapore-style' toll roads throughout … road user charging plans was Singapore, which has 'electronic road … in London as 'the technology is not there' However …