MUTCD flashing led stop sign R1-1

A potentially more effective approach would be to install flashing led stop sign selectively at the few intersections along a system that have actually experienced multiple crashes from drivers running stop signs.

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Alternatively, broader effective deployment across a system should include intersections identified to be high-risk based on a data-driven evaluation and where sight lines to the STOP sign are restricted by road geometry or topography. Guidance from the MnDOT Traffic Engineering Manual (TEM) suggests that at least two of the following criteria should be met for the intersection to be considered for MUTCD flashing led stop sign installation:
? Limited visibility on approach to the intersection
? History of crashes documented to be caused by a failure to stop and deemed preventable by implementation of conspicuity improvements
? At a rural junction of two or more high speed trunk highways to warn drivers of an unexpected crossing of another highway
? At a rural junction of a trunk highway and a local road which has no STOP controlled intersection within five miles

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