Pedestrian Group Size Study

Study date: ______Time: from: ______to: ______Location: ______

Crosswalk across: ______Curb-to-curb or road width W: ______

Divided roadway? Yes No Width of island: ______

Step 1. Pedestrian Count Children No. of Children No. of Children No. of Time Crossing Rows Time Crossing Rows Time Crossing Rows

Step 2. Determination of the Number of Rows N Group No. of Number of Groups Size Rows Tally Total Cumulative Computations 46–50 10 41–45 9 36–40 8 31–35 7 26–30 6 21–25 5 16–20 4 11–15 3 6–10 2 1–5 2 Total Number of Groups:

Step 3. Determination of the Adequate Gap Time G

W G   3 2(N 1) 3.5 Pedestrian Delay Time Study Study date: ______Location: ______Crosswalk across: ______End of survey (to nearest minute): ______85th percentile rows — N: ______Start of survey (to nearest minute): ______Roadway width — W: ______Total survey time (minutes) — T: ______Adequate gap time — G: ______secs.

Step 4. Pedestrian Delay Time D Gap Size Number of Gaps Multiply by (seconds) Field Study Data Total Gap Size Computations 8 9 T = total survey time × 60 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 t (total time of all gaps equal to or greater than G) = secs. D = ______%

Step 5. Determination of Need for Traffic Control See Determination of Need graph.