Hello!
Would anyone be able to point me towards any research or design standards suggesting either:
a) the relationship between vehicular flow and community severance
or
b) vehicular flow and design standards for when various types of segregation may or may not be necessary.
For example,
DfT Shared Space Project Stage 1: Appraisal of Shared Space, P21
"3.7.3 There is some evidence that pedestrian freedom of movement is restricted by traffic flow and speed. York identifies a series of thresholds with combinations of vehicle flow and speed above which pedestrians tended to walk along what would have been the footway area rather than walking along the central street space:
n traffic (other than bus) flow exceeds 50 vehicles per hour with speeds not exceeding 30mph
n traffic (other than bus) flow exceeds 100 vehicles per hour with speeds not exceeding 25mph, or
n traffic (other than bus) flow exceeds 200 vehicles per hour with speeds not exceeding 20mph."
Does the UK DfT or any other international comparison (probably CROW) have a set of standards for when different types of segregation becomes suggested, or how community impacts might be formally considered in an impact assessment?
For clarity, I am not implying a relationship (positive or negative) between segregation and severance. I'm just looking for indicative examples of how people have quantitatively defined a road as busy or not, and various important graduations or regulations within that.
Pete
Open University Geography Dept
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