02 Pedestrian signal heads should be used under any of the following conditions: Option: 01 Accessible pedestrian signals and detectors provide information in non-visual formats (such as audible tones, speech messages, and/or vibrating surfaces). They shall begin with the term "Wait," followed by intersection identification information modeled after: "Wait to cross Broadway at Grand." Where there are physical constraints on a particular corner that make it impractical to provide the 10-foot separation between the two pedestrian pushbuttons, the pushbuttons may be placed closer together or on the same pole. you should prepare to 02 If pedestrian signal heads are mounted on the same support as vehicular signal heads, there shall be a physical separation between them. If used, special purpose pushbuttons (to be operated only by authorized persons) should include a housing capable of being locked to prevent access by the general public and do not need an instructional sign. After the countdown displays zero, the display shall remain dark until the beginning of the next countdown. The use of additional pedestrian detectors on islands or medians where a pedestrian might become stranded should be considered. To enable pedestrians who have visual disabilities to distinguish and locate the appropriate pushbutton at an accessible pedestrian signal location, pushbuttons shall clearly indicate by means of tactile arrows which crosswalk signal is actuated by each pushbutton. Support: Once it is actuated, the pilot light shall remain illuminated until the pedestrian's green or WALKING PERSON (symbolizing WALK) signal indication is displayed. Where countdown pedestrian signals are used, the countdown shall always be displayed simultaneously with the flashing UPRAISED HAND (symbolizing DONT WALK) signal indication displayed for that crosswalk. Countdown displays shall not be used during the walk interval or during the red clearance interval of a concurrent vehicular phase. For pedestrian signal head indications, the symbols shall be at least 6 inches high. At certain locations, a supplemental sign in a more visible location may be used to call attention to the pedestrian pushbutton. Where multi-leg approaches or complex signal phasing require more than two pedestrian phases, such that it might be unclear which crosswalk is served by each audible tone. 03 Chapter 4F contains information regarding the use of pedestrian hybrid beacons and Chapter 4N contains information regarding the use of In-Roadway Warning Lights at unsignalized marked crosswalks. Standard: The walk indication is displayed in white, and the don't walk indication is displayed in Portland orange. 01 Pedestrian detectors may be pushbuttons or passive detection devices. Standard: WebThe walk signal indicates that pedestrians may cross the street, while the dont walk signal indicates that pedestrians must wait. 24 Accessible pedestrian signals that provide speech walk messages may provide similar messages in languages other than English, if needed, except for the terms "walk sign" and "wait.". 08 Accessible pedestrian signal detectors may be pushbuttons or passive detection devices. 07 Under stop-and-go operation, accessible pedestrian signals shall not be limited in operation by the time of day or day of week. The name of the street to be crossed may also be provided in accessible format, such as Braille or raised print. 02 An accessible pedestrian pushbutton shall incorporate a locator tone. 06 For pedestrian signal head indications, the symbols shall be at least 6 inches high. Pedestrian detectors may be pushbuttons or passive detection devices. For crosswalks where the pedestrian enters the crosswalk more than 100 feet from the pedestrian signal head indications, the symbols should be at least 9 inches high. Where pedestrians who walk slower than 3.5 feet per second, or pedestrians who use wheelchairs, routinely use the crosswalk, a walking speed of less than 3.5 feet per second should be considered in determining the pedestrian clearance time. Guidance: Each pedestrian signal head indication shall be independently displayed and emit a single color. The U.S. Access Board (www.access-board.gov) provides technical assistance for making pedestrian signal information available to persons with visual disabilities (see Page i for the address for the U.S. Access Board). 01 All new pedestrian signal head indications shall be displayed within a rectangular background and shall consist of symbolized messages (see Figure 4E-1), except that existing pedestrian signal head indications with lettered or outline style symbol messages shall be permitted to be retained for the remainder of their useful service life. 09 The additional time provided by an extended pushbutton press to satisfy pedestrian clearance time needs may be added to either the walk interval or the pedestrian change interval. 02 Engineering judgment should determine the need for separate pedestrian signal heads (see Section 4D.03) and accessible pedestrian signals (see Section 4E.09). The sound level of audible walk indications and pushbutton locator tones should be adjusted to be low enough to avoid misleading pedestrians who have visual disabilities when the following conditions exist: An alert tone, which is a very brief burst of high-frequency sound at the beginning of the audible walk indication that rapidly decays to the frequency of the walk tone, may be used to alert pedestrians to the beginning of the walk interval. A speech walk message is not required at times when the walk interval is not timing, but, if provided: Accessible pedestrian signals that provide speech walk messages may provide similar messages in languages other than English, if needed, except for the terms "walk sign" and "wait. Pedestrians may be provided with additional features such as increased crossing time, audible beaconing, or a speech pushbutton information message as a result of an extended pushbutton press. At intersections equipped with pedestrian signal heads, the pedestrian signal indications shall be displayed except when the vehicular traffic control signal is being operated in the flashing mode. 07 Except as provided in Paragraph 8, where two pedestrian pushbuttons are provided on the same corner of a signalized location, the pushbuttons should be separated by a distance of at least 10 feet. The sum of the time of the pedestrian change interval and the buffer interval shall not be less than the calculated pedestrian clearance time (see Paragraphs 7 through 16). 03 A pushbutton locator tone is a repeating sound that informs approaching pedestrians that a pushbutton to actuate pedestrian timing or receive additional information exists, and that enables pedestrians with visual disabilities to locate the pushbutton. Standard: Guidance: 22 If a leading pedestrian interval is used, it should be at least 3 seconds in duration and should be timed to allow pedestrians to cross at least one lane of traffic or, in the case of a large corner radius, to travel far enough for pedestrians to establish their position ahead of the turning traffic before the turning traffic is released. 17 If a pilot light is used at an accessible pedestrian signal location (see Sections 4E.09 through 4E.13), each actuation shall be accompanied by the speech message "wait.". Support: Signals The signal for pedestrians to walk is a white walking symbol. 13 An alert tone can be particularly useful if the walk tone is not easily audible in some traffic conditions. 04 The factors that make crossing at a signalized location difficult for pedestrians who have visual disabilities include: increasingly quiet cars, right turn on red (which masks the beginning of the through phase), continuous right-turn movements, complex signal operations, traffic circles, and wide streets. Once it is actuated, the pilot light shall remain illuminated until the pedestrian's green or WALKING PERSON (symbolizing WALK) signal indication is displayed. Pushbutton locator tones shall be intensity responsive to ambient sound, and be audible 6 to 12 feet from the pushbutton, or to the building line, whichever is less. Standard: A pedestrian change interval consisting of a flashing UPRAISED HAND (symbolizing DONT WALK) signal indication shall begin immediately following the WALKING PERSON (symbolizing WALK) signal indication. Guidance: 02 Accessible pedestrian signals shall have both audible and vibrotactile walk indications. PEDESTRIANSIGNALS Standard: The audible walk indication shall be audible from the beginning of the associated crosswalk. Pedestrian signal heads shall be mounted with the bottom of the signal housing including brackets not less than 7 feet or more than 10 feet above sidewalk level, and shall be positioned and adjusted to provide maximum visibility at the beginning of the controlled crosswalk. 09 Figure 4E-4 shows typical pedestrian pushbutton locations for a variety of situations. 12 An alert tone, which is a very brief burst of high-frequency sound at the beginning of the audible walk indication that rapidly decays to the frequency of the walk tone, may be used to alert pedestrians to the beginning of the walk interval. These provisions also position pushbutton poles in optimal locations for installation of accessible pedestrian signals (see, If pedestrian pushbuttons are used, they should be capable of easy activation and conveniently located near each end of the crosswalks. Speech messages might be either directly audible or transmitted, requiring a personal receiver to hear the message. Because of this, tones are the preferred means of providing audible walk indications except where two accessible pedestrian signals on one corner are not separated by a distance of at least 10 feet. Accessible pedestrian signals are typically integrated into the pedestrian detector (pushbutton), so the audible tones and/or messages come from the pushbutton housing. The additional time provided by an extended pushbutton press to satisfy pedestrian clearance time needs may be added to either the walk interval or the pedestrian change interval. 01 Pedestrian signal head indications shall have the following meanings: Standard: This requirement shall not apply to traffic control signals or pedestrian hybrid beacons that are activated from a flashing or dark mode to a stop-and-go mode by pedestrian actuations. Traffic Signals Research indicates that a rapid tick tone for each crossing coming from accessible pedestrian signal devices on separated poles located close to each crosswalk provides unambiguous information to pedestrians who are blind or visually impaired. 03 The WALKING PERSON (symbolizing WALK) signal indication shall be white, conforming to the publication entitled "Pedestrian Traffic Control Signal Indications" (see Section 1A.11), with all except the symbol obscured by an opaque material. 09 Speech pushbutton information messages may provide intersection identification, as well as information about unusual intersection signalization and geometry, such as notification regarding exclusive pedestrian phasing, leading pedestrian intervals, split phasing, diagonal crosswalks, and medians or islands. To be a useful system, the words and their meaning need to be correctly understood by all users in the context of the street environment where they are used. 07 Section 4E.11 contains additional provisions regarding the volume and sound level of pushbutton locator tones. 03 If additional crossing time is provided by means of an extended pushbutton press, a PUSH BUTTON FOR 2 SECONDS FOR EXTRA CROSSING TIME (R10-32P) plaque (see Figure 2B-26) shall be mounted adjacent to or integral with the pedestrian pushbutton. Figure 4E-4 Typical Pushbutton Locations (Sheet 1 of 2). Following the pedestrian change interval, a buffer interval consisting of a steady UPRAISED HAND (symbolizing DONT WALK) signal indication shall be displayed for at least 3 seconds prior to the release of any conflicting vehicular movement. Standard: Under stop-and-go operation, accessible pedestrian signals shall not be limited in operation by the time of day or day of week. Pedestrian Signals 03 If a particular signalized location presents difficulties for pedestrians who have visual disabilities to cross the roadway, an engineering study should be conducted that considers the needs of pedestrians in general, as well as the information needs of pedestrians with visual disabilities. Pedestrian Signals ", Following the audible walk indication, accessible pedestrian signals shall revert to the pushbutton locator tone (see. Option: The existing environment is often not sufficient to provide the information that pedestrians who have visual disabilities need to cross a roadway at a signalized location. 11 The name of the street to be crossed may also be provided in accessible format, such as Braille or raised print. A pushbutton locator tone is a repeating sound that informs approaching pedestrians that a pushbutton to actuate pedestrian timing or receive additional information exists, and that enables pedestrians with visual disabilities to locate the pushbutton. WebA sign is normally mounted above the pedestrian detector explaining its purpose, and the position of the push button will tell which crosswalk signal is activated by which push-button. Pedestrian Signals

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