Table 1

Type and Inspection Frequency on the UK roads (Highway Operational Standards 2018).

Hierarchy DescriptionInspection frequency and type from City Councils
Motorway1-2 per year (from Highways England)
Strategic Route12 times per year (monthly)
Main Distributor12 times per year (monthly)
Secondary Distributor12 times per year (monthly)
Link Road4 times a year (3 monthly)
Local Access RoadAnnually (once per year)
Minor Roads1 per two years (24 monthly) (standard is that they are passable with care)
Soft Roads (Green Lanes)No formal inspection regime. Inspected on a reactive basis (standard is that they are passable in a 4 wheel drive vehicle)

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