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HALOGEN AMI Signal Setting information
The data in the report is derived from Signal Setting information from the Advanced Motorway Indicator signs (AMIs) on the Highways Agency's English motorway network at an... -
The mean and median carriageway impact duration times and number of incidents...
The Highways Agency Command and Control database is an incident management system which captures details such as the duration of a carriageway impact. A Carriageway Impact...