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APPENDIX D PEDESTRIAN AND BICYCLE ANALYSIS DETAILS TABLE D-1. Pedestrian data variables. Recorded Variables Event Number = unique identifier for each crossing event Ped Number = number of pedestrians crossing during event Age (adult or youth) Start Location 1 - Entry Leg - within CW extended 2 - Entry Leg - outside CW extended 3 - Exit Leg - within CW extended 4 - Exit Leg - outside CW extended 5 - Other location (e.g., on circle to cross central island) Crossing Type 1 - Crossed entry and exit legs on painted crosswalk 2 - Crossed entry leg on painted crosswalk, exit leg off painted crosswalk 3 - Crossed exit leg on painted crosswalk, entry leg off painted crosswalk 4 - Did not cross on painted crosswalk at all 4A - Did not cross on crosswalk at all AND used center turn lane as splitter island / crossing refuge (only for Arrival Time = time at which the pedestrian arrived at the curb Start Time = time at which the pedestrian initiated the crossing Splitter Arrival = time at which the pedestrian arrived at the splitter island (after crossing first leg) Splitter Departure = time at which the pedestrian left the splitter island (to cross second leg) End Time = time at which pedestrian reached the far curb The following variables were recorded for each crossing leg (entry and exit). Rejected Gaps (time in seconds of each gap rejected upon arrival) - time between point of arrrival and the next vehicle reaching the crosswalk AND time between each subsequent pair of vehicles until the pedestrian crosses. Accepted Gap (time in seconds of the gap accepted, with max value of 30 sec) - time between point of arrival and when the next vehicle reaches the crosswalk after the pedestrian crosses OR time between rejected gap and the NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States D-1
TABLE D-1. Pedestrian data variables (continued). Recorded Variables Motorist Behavior 0 - not applicable (no vehicle in vicinity at time of crossing) 1 - vehicle yielded - slowed for ped in transit (not necessarily in crosswalk) 2 - vehicle yielded - stopped for ped in transit (not necessarily in crosswalk) 3 - vehicle yielded - slowed for ped waiting on curb or on splitter island 4 - vehicle yielded - stopped for ped waiting on curb or on splitter island 5 - vehicle did not yield - ped in transit 6 - vehicle did not yield - ped waiting on curb or on splitter island 7 - vehicle already stopped for other reason (applies to accepted and rejected gaps) Pedestrian Behavior 0 - not applicable (no vehicle in vicinity or vehicle yields) 1 - ped hesitated on curb or splitter island due to approaching vehicle (only applied to accepted gaps) 2 - ped hesitated after stepping into CW due to approaching vehicle 3 - ped stopped after stepping into CW due to approaching vehicle 4 - ped retreated to curb after stepping into CW due to approaching vehicle 5 - ped ran due to approaching vehicle Conflict 0 - none 1 - motorist swerved or abruptly stopped to avoid striking pedestrian 2 - pedestrian abruptly stopsped or moved to avoid being struck 3 - 1 and 2 both occurred 4 - collision occurred Notes (e.g., crossing to central island, peds with special needs, pedestrian age, etc.) Derived Variables Initial Wait Time = Start Time - Arrival Time Crossing Time (Leg 1) = Splitter Arrival - Start Time Splitter Wait/Crossing Time = Splitter Departure - Splitter Arrival Crossing Time (Leg 2) = End Time - Splitter Departure Total Crossing Time = End Time - Start Time NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States D-2
TABLE D-2. Bicyclist data variables. Recorded Variables Event Number = unique identifier for each bicylist event Event Type 1 - Bicyclist approaching/entering roundabout 2 - Bicyclist exiting roundabout 3 - Bicyclist circling roundabout 4 - Bicyclist crossing approach leg (like a pedestrian) Bicyclist Position (at entry and exit) 1 - righthand side of vehicle lane 2 - center of vehicle lane 3 - lefthand side of vehicle lane 4 - bike lane/paved shoulder 5 - sidewalk Motor Vehicle Presence (at entry and exit) 1 - passing bicyclist 2 - trailing bicyclist 3 - leading bicyclist 4 - no vehicle present Bicyclist Behavior (for approaching/entering bicyclists) 1 - entered with a safe gap (no yield necessary) 2 - entered with a safe gap (yielded to motor vehicle) 3 - entered with an unsafe gap (did not yield) 4 - entered with an unsafe gap (yielded, then entered) 5 - not applicable (e.g., used sidewalk) Bicyclist Behaviors (for exiting bicyclists) 1 - exited and remained to the right in the vehicle lane 2 - exited and remained in the center of the vehicle lane 3 - exited and moved to the bike lane/paved shoulder 4 - exited and moved to sidewalk 5 - not applicable (exited from the sidewalk) Start Location for Bicyclists Crossing Approach Leg 1 - Entry Leg - within CW extended 2 - Entry Leg - outside CW extended 3 - Exit Leg - within CW extended 4 - Exit Leg - outside CW extended 5 - Other location (e.g., on circle to cross central island) Crossing Type for Bicyclists Crossing Approach Leg 1 - Crossed entry and exit legs on painted crosswalk 2 - Crossed entry leg on painted crosswalk, exit leg off painted crosswalk 3 - Crossed exit leg on painted crosswalk, entry leg off painted crosswalk 4 - Did not cross on painted crosswalk at all 4A - Did not cross on crosswalk at all AND used center turn lane as splitter island / crossing refuge (only for MD05-SW/NW1) Other Behaviors (e.g., wrong-way riding, conflicts with motor vehicles) NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States D-3
