Agilysis Limited’s Post

We have supported Transport Scotland in their consultation on speed limits for rural roads by undertaking a 'Scale of Change' analysis to review current speeds and traffic flows across their network. To do this we used data from the Speed Compliance Tool based on road network data from Ordnance Survey, traffic speeds from Basemap and speed limits from Insight Warehouse Limited. We then reviewed what percentage of traffic on various road classes is currently exceeding 50mph (the proposed new limit). It is already well-understood that traffic speeds are low across many of our rural roads and even on high-flow 'fast' roads, speeds are often nowhere near the existing national speed limit (NSL) of 60mph. The second image shows the entire single-carriageway network subject to the NSL in Aberdeenshire with average and 85th percentile speeds at different times of day. An example is also shown of a report produced for a single road section with one of the highest average speeds and even here, they are well below the current limit. Credit to the team including Suzanne Coles, Ella Jones, Muhammad Osama khan and Richard Owen who worked on the report earlier in the year. Our Speed Compliance Tool has proved phenomenally popular with authorities and police forces who want to understand vehicle speeds on their road networks without having to commission expensive surveys. This report shows that the data can be used in many different ways to inform policy and strategy to improve road safety.

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