Pedestrian Signal Safety - AAA Foundation for Traffic Safety

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COUNTY OF MONROE DEPARTMENT OF TRANSPORTATION TELEPHONE: 760-7700 FAX: 760-7730 MEMORANDUM To: Terry Rice From: Jim Pond RE: COUNTDOWN PEDESTRIAN SIGNAL DEVICES A device called the “countdown pedestrian signal” has been developed which displays to pedestrians the number of seconds remaining on the flashing “DON’T WALK” interval. The device is intended to notify pedestrians how long it will be before the flashing “DON’T WALK” time has expired. This expiration is the point in time where they should have completed their crossing. This information in turn may guide them in their decisionmaking process as they either initiate or complete a crossing of the street. The current NYSDOT MUTCD does not address these devices. The Federal MUTCD describes them as an optional device, but does not offer specific guidance on when it is appropriate to use them. NYSDOT Region 4 is using them on new projects at intersections for crosswalks across the primary street, and does not use them across side streets. They do not have any other criteria for their deployment. Cost is a significant issue with these devices. In addition to the cost of purchasing and installing them, there is a very significant energy cost to operate them. There is also the potential for both mechanical failure (based on experience by NYSDOT signals) and erroneous information being displayed on the device (as per the caution in the Federal MUTCD guidance). Therefore, this device should be used selectively where it would provide the most benefit to pedestrians. Typically, the crossing time is set with an assumed walking speed of 4.0 feet per second so that the pedestrian can reach the vicinity of the far curb when the crossing time has expired. Many pedestrians walk at speeds higher than this rate. According to ITE’s Toolbox on Intersection Safety and Design, walking speeds range up to 6.0 feet per second. Table 1 illustrates the difference in crossing times at these various speeds. The table assumes 12-foot lanes and adds 12 feet to each situation to allow for the extra distance introduced by the curb radii typically found at an intersection. It also assumes there is no significant skew angle in the crosswalk. 262 229
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Pedestrian Signal Safety for Older
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LIST OF TABLES Table/Page ES-1/19.
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LIST OF FIGURES Figure/Page 1/22. E
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LIST OF DEFINITIONS Access Board Th
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FOREWORD ABOUT THE SPONSOR This stu
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16 Mark J. Kulewicz Director-Traffi
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18 LITERATURE REVIEW FINDINGS • O
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20 1. Based on the results observed
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22 Figure 1. Example of a pedestria
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METHODS The project objectives were
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and 3.40 ft./sec. for pedestrians o
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the potential impact of various wal
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Pedestrian Start-Up Time Pedestrian
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• a PCD signal with both the coun
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six crosswalks experienced a signif
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where: W = duration of WALK indicat
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Gates, Noyce, Bill, and Van Ee expa
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Table 3. Summary of empirical data
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Table 4. Summary of researcher reco
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SITE SELECTION/EFFECT OF DIFFERENT
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Walking Speeds The project team mea
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RESULTS AGENCY SURVEY FINDINGS Deta
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5 0 . 0 % 4 5 . 0 % 4 0 . 0 % 3 5 .
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POSITIVE IMPACTS OF PEDESTRIAN COUN
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• Give third priority to signaliz
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15th-Percentile Walking Speed The 1
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Table 10: Pedestrian signal complia
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Table 12. Older pedestrians remaini
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The case study intersections in Sal
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Five different traffic volume condi
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Minneapolis/St.Paul, Minnesota Figu
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Figure 10. Delay vs. volumes at Mon
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There was no change in overall LOS
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Figure 13. Delay vs. volumes at Ora
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Pedestrian Understanding and Prefer
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the countdown at the end of the FDW
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lengths are preferred for pedestria
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Table 23. Comparison of the literat
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observer was assigned to each inter
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APPENDIX A WEB-PEDESTRIAN COUNTDOWN
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PURPOSE OF SURVEY The purpose of th
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d) Plan to use during the next one
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Question 22 If you answered “yes
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Table A-1. Distribution of responde
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Table A-2. Respondent organizations
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Figure A-2 shows the distribution o
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6 0 .0 % 5 5 .0 % 5 0 .0 % 4 5 .0 %
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Figure A-7. Roadway characteristics
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PEDESTRIAN COUNTDOWN SIGNAL START/E
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PCD Signal Start/End Times Start of
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3. Seniors and other adults showed
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• No. Countdown timers encourage
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the crossing time remaining? Yes 20
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• None (n = 32) • Motorists spe
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PEDESTRIAN SAFETY FOR OLDER PEDESTR
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APPENDIX C: BROWARD COUNTY, FLORIDA
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BACKGROUND Broward County is locate
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DATA COLLECTION METHODOLOGY Pedestr
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For younger pedestrians, the mean w
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Pedestrians Under 65 Table C-6 show
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Pedestrians Left in Intersection At
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Table C-11. Pedestrian WALK and cle
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Figure C-2. Delay vs. volumes at ca
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Table C-13. Broward County, Florida
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APPENDIX D: MINNEAPOLIS/ST. PAUL, M
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BACKGROUND Minneapolis, in southeas
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• Lyndale Avenue and Franklin Ave
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Table D-2. Walking speeds for pedes
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Table D-4. Significance testing of
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Table D-7. Frequency and percentage
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SURVEY RESULTS A total of 150 pedes
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For the major street approaches, LO
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3.50 ft./sec. Figure D-6. Intersect
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SUMMARY In summary, the key results
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LIST OF TABLES Table/Page E-1/156.
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SITE SELECTION Engineering staff fr
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DATA COLLECTION METHODOLOGY Pedestr
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For younger pedestrians, the mean w
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Twenty-two pedestrians with mobilit
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Older Pedestrians Table E-8 shows t
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EFFECT OF CHANGING WALKING SPEEDS O
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As shown in Table E-12, major stree
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3.50 ft./sec. Figure E-6. Intersect
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SUMMARY In summary, the key results
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LIST OF TABLES Table/Page F-1/176.
Page 177 and 178: SITE SELECTION The City of White Pl
Page 179 and 180: RESULTS Walking Speeds The walking
Page 181 and 182: For younger pedestrians, the mean w
Page 183 and 184: cross. That is, at an intersection
Page 185 and 186: Pedestrians Left in Intersection At
Page 187 and 188: Table F-11. Pedestrian WALK and cle
Page 189 and 190: Table F-13. White Plains, New York:
Page 191 and 192: APPENDIX G: SALT LAKE CITY, UTAH CA
Page 193 and 194: BACKGROUND Salt Lake City is Utah
Page 195 and 196: Figure G-2 displays the type of ped
Page 197 and 198: Table G-2. Walking speeds for pedes
Page 199 and 200: Pedestrians with Impairments Pedest
Page 201 and 202: Older Pedestrians Table G-8 shows t
Page 203 and 204: EFFECT OF CHANGING WALKING SPEEDS O
Page 205 and 206: Figure G-3. Delay vs. volumes at ca
Page 207 and 208: Table G-13. Salt Lake City, Utah in
Page 209 and 210: APPENDIX H: ORANGE COUNTY, CALIFORN
Page 211 and 212: BACKGROUND Orange County, Californi
Page 213 and 214: DATA COLLECTION METHODOLOGY Pedestr
Page 215 and 216: For younger pedestrians, the mean w
Page 217 and 218: Younger Pedestrians Table H-6 shows
Page 219 and 220: Pedestrians Left in Intersection At
Page 221 and 222: Figure H-2 shows the overall averag
Page 223 and 224: Figure H-2. Delay vs. volumes at ca
Page 225 and 226: Table H-13. Orange County, Californ
Page 227: APPENDIX I: MONROE COUNTY, NEW YORK
Page 231 and 232: APPENDIX J: NATIONAL COMMITTEE ON U
Page 233 and 234: 3. Add a new Guidance statement rec
Page 235 and 236: Guidance: Where the pedestrian clea
Page 237 and 238: Fugger, T.F., B.C. Randles, A.C. St
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