24.3.11 shall be permitted to take precedence over all other signals....
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NFPA
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Protruding Objects
Response by [Participant]: The state of California attempted to address that by requiring what are known as detectable warnings, the bumps on the curb ramps, underneath drinking fountains...
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OBJECTIVES
The primary objective of this paper is to review the key issues in signalization of roundabouts, where the purpose of the signals is to provide pedestrian access, with particular attention...
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Executive Summary
Thirteen detectable warnings were tested....
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2.10 Other Factors that May Predict Visual Detection and High Conspicuity Ratings
warnings....
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2.12 Comments from Participants
The black-and-white stripe detectable warning was often called “very attention-getting” and some participants called it their favorite detectable warning, but a few others noted that the...
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TEXT TELEPHONE
[DSA-AC] Machinery or equipment that employs interactive text-based communications through the transmission of coded signals across the standard telephone network....
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SUMMARY AND CONCLUSIONS
The actual cost could be less, if fewer than four signal faces are used at each crossing....
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AUTOMATIC DOOR
[DSA-AC] A door equipped with a power operated mechanism and controls that open and close the door automatically upon receipt of a momentary actuating signal....
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3.2 Study Limitations and Other Issues
warning surface and the luminance contrast of the warning surface with adjacent surfaces....
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Appendix D: Photometric Measurements
In the field it is possible to calculate reflectance factor of a detectable warning (RDW) by measuring the luminance of the detectable warning (LDW) and the luminance of a standard white...
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Multi-Lane Channelized Turn Lanes (Section-by-Section Analysis)
Multi-Lane Channelized Turn Lanes (Section-by-Section Analysis) Pedestrian activated signals must be provided at pedestrian street crossings at multi-lane channelized turn lanes at roundabouts...
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1009.4.1 Standby power
The elevator shall meet the emergency operation and signaling device requirements of California Code of Regulations, Title 8, Division 1, Chapter 4, Subchapter 6, Elevator Safety Orders....
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2.9 Models to Predict Visual Detection and High Conspicuity Ratings
Contrast (or log contrast), reflectance of the detectable warning, reflectance of the sidewalk, and a binary parameter which encoded patterned versus single-color detectable warnings were...
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2.4 False Detections
Nearly half of the false detections were due to a single participant who reported seeing a detectable warning on 5 out of 6 of her blank trials....
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1. Public Rights-of-Way
Other highlights in the requirements include accessible pedestrian signals, curb ramps and blended transitions, detectable warning surfaces, crosswalks at roundabouts, on-street parking,...
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2.5 Visual Detection Distance
For example, if a participant first saw the detectable warning from a maximum distance of 4.3 m (14 feet), and saw the detectable warning when tested at the 2.44 m (8 ft) distance, then...
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Appendix G: Comments from Participants
White Detectable Warning ... on Brick Sidewalk would get dirty quick "one of my favorites" looks larger than other detectable warning doesn't look like a warning ......
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4.28.3* Visual Alarms
Visual alarm signal appliances shall be integrated into the building or facility alarm system....
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1.7 Procedure
Participants were given a small sample piece of detectable warning material to see and feel, then were shown examples of a detectable warning and a blank on a sidewalk....
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2.6 Conspicuity Ratings
Results for most detectable warnings varied between the different sidewalks....
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TTY
Machinery that employs interactive text-based communication through the transmission of coded signals across the telephone network....
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RESEARCH NEEDS
Although there is extensive experience with traffic signals both in the U.S. and abroad, experience with traffic signals at roundabout crosswalks is limited, and experience with signals...
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TTY
Machinery that employs interactive text-based communication through the transmission of coded signals across the telephone network....