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Uncontrolled Pedestrian Crossing <br />Data Collection Worksheet <br />Mark the following: site distances and potential conflicts, pavement markings (crosswalk, edge lines, center lines, lane lines, stop lines, and any other <br />markings), signing, location of lighting units, curb ramps, truncated domes, presence of any other crosswalks or crossing locations parallel to and <br />nearby the location being studied, adjacent intersection traffic control, parking, intersection width, lane lengths, shoulder widths, sign placement, <br />and nearby orgins and destinations . <br />draw or insert map of location being studied <br />Notes: <br />Sight Distance Calculations: <br />where: <br />defaults: <br />2 <br />Stopping sight distance (SSD), ft = 1.47St + 1.075S/a <br />t = brake reaction time, s2.5 <br />2 <br />a = deceleration rate, ft/s <br />Pedestrian sight distance (PedSD), ft = 1.47S(L / S + t)11.2 <br />ps <br />S = average pedestrian walking speed, ft/s <br />3.5 <br />p <br />where: S = design speed, mpht = pedestrian start-up and end clearance time, s3.0 <br />s <br />L = length of crossing, ft <br />Page 2 of 2 <br /> <br />