Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections (2012) / Chapter Skim
Currently Skimming:
Pages 17-21
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 17... ...
17 There is much discussion throughout the industry and those associated with it (i.e., government officials/ lawmakers, law enforcement, etc.) about how to address the numerous issues and factors involved with developing change interval timing procedures.
|
From page 18... ...
18 • A list of international organizations developed by the research team; and • A list of agency traffic engineers generated by ITE through the National Transportation Operations Coalition. Ultimately, the questionnaire was disseminated to approximately 2,000 recipients.
|
From page 19... ...
19 – 25 agencies reported no maximum total change interval timing value. – Agencies with maximum values for total change interval timing of 7 seconds or more, including those with no maximum, accounted for 76 percent of respondents.
|
From page 20... ...
20 Method Number of Responses Percent of Responses As conditions change 68 5 1 Only once, to time the interval 14 1 1 Annually 3 2 Other 48 3 6 TOTAL 133 100 Table 7. Frequency of speed measurements.
|
From page 21... ...
21 Special Situation or Population Number of Responses Turning m ovements (m ost left turns) 6 9 Adjust as needed / engineering judg me nt 10 Trucks / heavy vehicles 5 Bicycles 4 Pedestrians 3 Near schools or senior centers 2 Complex / skewed intersections 2 Red-light camera enforcement 1 Table 9.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.