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From page 103... ... NCHRP 3-78b: Final Project Report April 2016 7 APPENDIX A: WAYFINDING DATA DETAILS This appendix presents the wayfinding method and the data collected at roundabouts and channelized turn lanes. Data were collected at roundabouts in Michigan, North Carolina, Ohio, and Maryland, and at channelized turn lanes in Colorado, North Carolina, Maryland, and Arizona. Read the entire page →
From page 104... ... NCHRP 3-78b: Final Project Report April 2016 provide useful wayfinding information. Because the wayfinding study was a component of a larger study whose principal goal was to evaluate crosswalk treatments' effects on the decision about when to cross (subtask 3 above) Read the entire page →
From page 105... ... NCHRP 3-78b: Final Project Report April 2016 curb ramp of the island, but vehicles were not close or were yielding until the person reoriented themselves. Intervention was coded as 1 if at least one intervention occurred during a trial, and 0 if no intervention occurred during a trial. Read the entire page →
From page 106... ... NCHRP 3-78b: Final Project Report April 2016 7.3 Results 7.3.1 Wayfinding to Island Figures 7-1, 7-2, and 7-3 provide error rates for wayfinding to the island for all roundabout and channelized turn lane sites, and for roundabout and channelized turn lane sites by location. Table 7-2 provides detailed information on study locations and sample sizes for roundabout and channelized turn lane sites by intersection location. Read the entire page →
From page 107... ... NCHRP 3-78b: Final Project Report April 2016 Figure 7-2: To Island Wayfinding Error Rates for Roundabout Sites Bar graph shows the wayfinding error rates for each of the roundabout sites. For missed crosswalk, there was 13% error rate at Ann Arbor, 15% at Cary, 38% at Hilliard, 15% at Greenbelt and 31% at Oakland County. Read the entire page →
From page 108... ... NCHRP 3-78b: Final Project Report April 2016 Table 7-2: To Island Wayfinding Locations and Sample Sizes Site Name Site Type Intersection Approach Number of Subjects Total Number of Observations for each task at each site Boulder, CO CTL Arapahoe and Foothills SW N/A 5 10 Boulder, CO CTL Foothills and Baseline NE N/A 5 10 Boulder, CO CTL Foothills and Baseline SW N/A 5 10 Boulder, CO CTL Canyon and 28th SW N/A 5 10 Boulder, CO CTL Pearl and 28th NE N/A 6 12 Boulder, CO CTL Pearl and 28th NW N/A 5 10 Cary, NC CTL Kildaire Farm and Tryon W N/A 5 10 Greenbelt, MD CTL Kenilworth and West NW N/A 6 10 Tucson, AZ CTL Grant and Oracle NE N/A 3 (Pilot subject omitted) 6 Tucson, AZ CTL Grant and Oracle SW N/A 3 (Pilot subject omitted) Read the entire page →
From page 109... ... NCHRP 3-78b: Final Project Report April 2016 at the Greenbelt, Maryland location. Participants were more likely to miss the crosswalk, initially align outside the crosswalk, and end their crossing outside of the crosswalk at the channelized turn lane sites than the roundabout sites when wayfinding to the island. Read the entire page →
From page 110... ... NCHRP 3-78b: Final Project Report April 2016 Only one on island trial at Greenbelt location Figure 7-5: On Island Wayfinding Error Rates for Roundabout Sites Bar graph shows the wayfinding error rates on islands for each of the roundabout sites. Note states "Only one on island trial at Greenbelt location." For missed crosswalk, there was 10% error rate at Ann Arbor, 20% at Cary, 38% at Columbus-Hilliard, 100% at Greenbelt and 8% at Oakland County. Read the entire page →
From page 111... ... NCHRP 3-78b: Final Project Report April 2016 Table 7-3: On Island Wayfinding Locations and Sample Sizes Site Name Site Type Intersection Approach Number of Subjects Number of Observations Boulder, CO CTL Arapahoe and Foothills SW NA 5 10 Boulder, CO CTL Foothills and Baseline NE NA 5 10 Boulder, CO CTL Foothills and Baseline SW NA 5 10 Boulder, CO CTL Canyon and 28th SW NA 5 10 Boulder, CO CTL Pearl and 28th NE NA 6 12 Boulder, CO CTL Pearl and 28th NW NA 5 10 Cary, NC CTL Kildaire Farm and Tryon W NA 5 10 Greenbelt, MD CTL Kenilworth and West NW NA 6 10 Tucson, AZ CTL Grant and Oracle NE NA 3 (Pilot subject omitted) 6 Tucson, AZ CTL Grant and Oracle SW NA 3 (Pilot subject omitted) Read the entire page →
From page 112... ... NCHRP 3-78b: Final Project Report April 2016 and all channelized turn lane sites. For roundabout sites, the initial alignment error rate was highest at the Oakland County, Michigan location. Read the entire page →
From page 113... ... NCHRP 3-78b: Final Project Report April 2016 Table 7-4: To Island Error Rates for Criterion 1, 3, and 5 at Roundabout Sites Site Name Site Type Intersection Approach Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Crossing Ending Location Success Crossing Ending Location Failure Crossing Ending Location % Failure Ann Arbor, MI RBT Ellsworth and State W Entry 7 1 13% 7 1 13% 7 1 13% Ann Arbor, MI RBT Ellsworth and State W Exit 8 0 0% 6 2 25% 8 0 0% Ann Arbor, MI RBT Nixon and Huron S Entry 8 0 0% 8 0 0% 8 0 0% Ann Arbor, MI RBT Nixon and Huron S Exit 6 1 14% 7 0 0% 7 0 0% Cary, NC RBT Old Apex and Chatham W Entry 8 2 20% 3 7 70% 10 0 0% Cary, NC RBT Old Apex and Chatham W Exit 9 1 10% 6 4 40% 9 1 10% Columbus- Hilliard, OH RBT Cemetery and Main N Entry 9 8 47% 5 8 62% 4 4 50% Columbus- Hilliard, OH RBT Cemetery and Main S Entry 15 7 32% 18 4 18% 14 4 22% Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Entry 7 3 30% 6 3 33% 7 2 22% Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Exit 10 1 9% 6 5 45% 4 7 64% Oakland County, MI RBT Farmington and Maple E Entry 2 6 75% 4 4 50% 7 1 13% Oakland County, MI RBT Farmington and Maple E Exit 2 1 33% 3 0 0% 2 1 33% Oakland County, MI RBT Farmington and Maple S Entry 7 2 22% 7 2 22% 8 1 11% Oakland County, MI RBT Farmington and Maple S Exit 5 1 17% 1 5 83% 4 2 33% 113 Read the entire page →
From page 114... ... NCHRP 3-78b: Final Project Report April 2016 Table 7-5: To Island Error Rates for Criterion 1, 3, and 5 at Channelized Turn Lane Sites Site Name Site Type Intersection Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Crossing Ending Location Success Crossing Ending Location Failure Crossing Ending Location % Failure Boulder, CO CTL Arapahoe and Foothills SW 9 1 10% 10 0 0% 5 4 44% Boulder, CO CTL Foothills and Baseline NE 10 0 0% 6 4 40% 4 6 60% Boulder, CO CTL Foothills and Baseline SW 10 0 0% 1 9 90% 3 7 70% Boulder, CO CTL Canyon and 28th SW 10 0 0% 7 3 30% 8 2 20% Boulder, CO CTL Pearl and 28th NE 12 0 0% 6 6 50% 8 3 27% Boulder, CO CTL Pearl and 28th NW 10 0 0% 6 4 40% 7 2 22% Cary, NC CTL Kildaire Farm and Tryon W 8 2 20% 4 6 60% 8 2 20% Greenbelt, MD CTL Kenilworth and West NW 9 1 10% 3 7 70% 3 7 70% Tucson, AZ CTL Grant and Oracle NE 6 0 0% 5 1 17% 5 1 17% Tucson, AZ CTL Grant and Oracle SW 6 0 0% 5 1 17% 4 2 33% Tucson, AZ CTL Speedway and Wilmot NW 6 0 0% 4 2 33% 4 2 33% Tucson, AZ CTL Tanque Verde and Sabino Canyon NE 6 0 0% 4 2 33% 5 1 17% 114 Read the entire page →
From page 115... ... NCHRP 3-78b: Final Project Report April 2016 Table 7-6: On Island Error Rates for Criterion 1 and 3 at Roundabout Sites Site Name Site Type Intersection Approach Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Ann Arbor, MI RBT Ellsworth and State W Entry 6 2 25% 6 0 0 Ann Arbor, MI RBT Ellsworth and State W Exit 7 1 13% 6 1 14% Ann Arbor, MI RBT Nixon and Huron S Entry 7 0 0% 7 0 0% Ann Arbor, MI RBT Nixon and Huron S Exit 6 0 0% 6 0 0% Cary, NC RBT Old Apex and Chatham W Entry 8 2 20% 7 2 22% Cary, NC RBT Old Apex and Chatham W Exit 8 2 20% 7 2 22% Columbus- Hilliard, OH RBT Cemetery and Main N Entry 6 9 60% 7 0 0% Columbus- Hilliard, OH RBT Cemetery and Main S Entry 17 5 23% 12 8 40% Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Entry No Data No Data No Data No Data No Data No Data Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Exit 0 1 100% No Data No Data No Data Oakland County, MI RBT Farmington and Maple E Entry 6 1 14% 2 4 67% Oakland County, MI RBT Farmington and Maple E Exit 3 0 0% 2 1 33% Oakland County, MI RBT Farmington and Maple S Entry 8 1 11% 8 0 0% Oakland County, MI RBT Farmington and Maple S Exit 5 0 0% 1 4 80% 115 Read the entire page →
From page 116... ... NCHRP 3-78b: Final Project Report April 2016 Table 7-7: On Island Error Rates for Criterion 1 and 3 at Channelized Turn Lane Sites Site Name Site Type Intersection Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Boulder, CO CTL Arapahoe and Foothills SW 9 1 10% 9 0 0% Boulder, CO CTL Foothills and Baseline NE 7 3 30% 1 8 89% Boulder, CO CTL Foothills and Baseline SW 9 1 10% 5 4 44% Boulder, CO CTL Canyon and 28th SW 10 0 0% 7 3 30% Boulder, CO CTL Pearl and 28th NE 10 2 17% 7 3 30% Boulder, CO CTL Pearl and 28th NW 7 3 30% 5 2 29% Cary, NC CTL Kildaire Farm and Tryon W 2 8 80% 1 1 50% Greenbelt, MD CTL Kenilworth and West NW 5 5 50% 7 1 13% Tucson, AZ CTL Grant and Oracle NE 6 0 0% 5 1 17% Tucson, AZ CTL Grant and Oracle SW 5 1 17% 2 3 60% Tucson, AZ CTL Speedway and Wilmot NW 4 2 33% 3 1 25% Tucson, AZ CTL Tanque Verde and Sabino Canyon NE 5 1 17% 4 1 20% 116 Read the entire page →

From page 103...

... NCHRP 3-78b: Final Project Report April 2016 7 APPENDIX A: WAYFINDING DATA DETAILS This appendix presents the wayfinding method and the data collected at roundabouts and channelized turn lanes. Data were collected at roundabouts in Michigan, North Carolina, Ohio, and Maryland, and at channelized turn lanes in Colorado, North Carolina, Maryland, and Arizona.

Read the entire page →

From page 104...

... NCHRP 3-78b: Final Project Report April 2016 provide useful wayfinding information. Because the wayfinding study was a component of a larger study whose principal goal was to evaluate crosswalk treatments' effects on the decision about when to cross (subtask 3 above)

Read the entire page →

From page 105...

... NCHRP 3-78b: Final Project Report April 2016 curb ramp of the island, but vehicles were not close or were yielding until the person reoriented themselves. Intervention was coded as 1 if at least one intervention occurred during a trial, and 0 if no intervention occurred during a trial.

Read the entire page →

From page 106...

... NCHRP 3-78b: Final Project Report April 2016 7.3 Results 7.3.1 Wayfinding to Island Figures 7-1, 7-2, and 7-3 provide error rates for wayfinding to the island for all roundabout and channelized turn lane sites, and for roundabout and channelized turn lane sites by location. Table 7-2 provides detailed information on study locations and sample sizes for roundabout and channelized turn lane sites by intersection location.

Read the entire page →

From page 107...

... NCHRP 3-78b: Final Project Report April 2016 Figure 7-2: To Island Wayfinding Error Rates for Roundabout Sites Bar graph shows the wayfinding error rates for each of the roundabout sites. For missed crosswalk, there was 13% error rate at Ann Arbor, 15% at Cary, 38% at Hilliard, 15% at Greenbelt and 31% at Oakland County.

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From page 108...

... NCHRP 3-78b: Final Project Report April 2016 Table 7-2: To Island Wayfinding Locations and Sample Sizes Site Name Site Type Intersection Approach Number of Subjects Total Number of Observations for each task at each site Boulder, CO CTL Arapahoe and Foothills SW N/A 5 10 Boulder, CO CTL Foothills and Baseline NE N/A 5 10 Boulder, CO CTL Foothills and Baseline SW N/A 5 10 Boulder, CO CTL Canyon and 28th SW N/A 5 10 Boulder, CO CTL Pearl and 28th NE N/A 6 12 Boulder, CO CTL Pearl and 28th NW N/A 5 10 Cary, NC CTL Kildaire Farm and Tryon W N/A 5 10 Greenbelt, MD CTL Kenilworth and West NW N/A 6 10 Tucson, AZ CTL Grant and Oracle NE N/A 3 (Pilot subject omitted) 6 Tucson, AZ CTL Grant and Oracle SW N/A 3 (Pilot subject omitted)

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From page 109...

... NCHRP 3-78b: Final Project Report April 2016 at the Greenbelt, Maryland location. Participants were more likely to miss the crosswalk, initially align outside the crosswalk, and end their crossing outside of the crosswalk at the channelized turn lane sites than the roundabout sites when wayfinding to the island.

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From page 110...

... NCHRP 3-78b: Final Project Report April 2016 Only one on island trial at Greenbelt location Figure 7-5: On Island Wayfinding Error Rates for Roundabout Sites Bar graph shows the wayfinding error rates on islands for each of the roundabout sites. Note states "Only one on island trial at Greenbelt location." For missed crosswalk, there was 10% error rate at Ann Arbor, 20% at Cary, 38% at Columbus-Hilliard, 100% at Greenbelt and 8% at Oakland County.

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From page 111...

... NCHRP 3-78b: Final Project Report April 2016 Table 7-3: On Island Wayfinding Locations and Sample Sizes Site Name Site Type Intersection Approach Number of Subjects Number of Observations Boulder, CO CTL Arapahoe and Foothills SW NA 5 10 Boulder, CO CTL Foothills and Baseline NE NA 5 10 Boulder, CO CTL Foothills and Baseline SW NA 5 10 Boulder, CO CTL Canyon and 28th SW NA 5 10 Boulder, CO CTL Pearl and 28th NE NA 6 12 Boulder, CO CTL Pearl and 28th NW NA 5 10 Cary, NC CTL Kildaire Farm and Tryon W NA 5 10 Greenbelt, MD CTL Kenilworth and West NW NA 6 10 Tucson, AZ CTL Grant and Oracle NE NA 3 (Pilot subject omitted) 6 Tucson, AZ CTL Grant and Oracle SW NA 3 (Pilot subject omitted)

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From page 112...

... NCHRP 3-78b: Final Project Report April 2016 and all channelized turn lane sites. For roundabout sites, the initial alignment error rate was highest at the Oakland County, Michigan location.

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From page 113...

... NCHRP 3-78b: Final Project Report April 2016 Table 7-4: To Island Error Rates for Criterion 1, 3, and 5 at Roundabout Sites Site Name Site Type Intersection Approach Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Crossing Ending Location Success Crossing Ending Location Failure Crossing Ending Location % Failure Ann Arbor, MI RBT Ellsworth and State W Entry 7 1 13% 7 1 13% 7 1 13% Ann Arbor, MI RBT Ellsworth and State W Exit 8 0 0% 6 2 25% 8 0 0% Ann Arbor, MI RBT Nixon and Huron S Entry 8 0 0% 8 0 0% 8 0 0% Ann Arbor, MI RBT Nixon and Huron S Exit 6 1 14% 7 0 0% 7 0 0% Cary, NC RBT Old Apex and Chatham W Entry 8 2 20% 3 7 70% 10 0 0% Cary, NC RBT Old Apex and Chatham W Exit 9 1 10% 6 4 40% 9 1 10% Columbus- Hilliard, OH RBT Cemetery and Main N Entry 9 8 47% 5 8 62% 4 4 50% Columbus- Hilliard, OH RBT Cemetery and Main S Entry 15 7 32% 18 4 18% 14 4 22% Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Entry 7 3 30% 6 3 33% 7 2 22% Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Exit 10 1 9% 6 5 45% 4 7 64% Oakland County, MI RBT Farmington and Maple E Entry 2 6 75% 4 4 50% 7 1 13% Oakland County, MI RBT Farmington and Maple E Exit 2 1 33% 3 0 0% 2 1 33% Oakland County, MI RBT Farmington and Maple S Entry 7 2 22% 7 2 22% 8 1 11% Oakland County, MI RBT Farmington and Maple S Exit 5 1 17% 1 5 83% 4 2 33% 113

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From page 114...

... NCHRP 3-78b: Final Project Report April 2016 Table 7-5: To Island Error Rates for Criterion 1, 3, and 5 at Channelized Turn Lane Sites Site Name Site Type Intersection Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Crossing Ending Location Success Crossing Ending Location Failure Crossing Ending Location % Failure Boulder, CO CTL Arapahoe and Foothills SW 9 1 10% 10 0 0% 5 4 44% Boulder, CO CTL Foothills and Baseline NE 10 0 0% 6 4 40% 4 6 60% Boulder, CO CTL Foothills and Baseline SW 10 0 0% 1 9 90% 3 7 70% Boulder, CO CTL Canyon and 28th SW 10 0 0% 7 3 30% 8 2 20% Boulder, CO CTL Pearl and 28th NE 12 0 0% 6 6 50% 8 3 27% Boulder, CO CTL Pearl and 28th NW 10 0 0% 6 4 40% 7 2 22% Cary, NC CTL Kildaire Farm and Tryon W 8 2 20% 4 6 60% 8 2 20% Greenbelt, MD CTL Kenilworth and West NW 9 1 10% 3 7 70% 3 7 70% Tucson, AZ CTL Grant and Oracle NE 6 0 0% 5 1 17% 5 1 17% Tucson, AZ CTL Grant and Oracle SW 6 0 0% 5 1 17% 4 2 33% Tucson, AZ CTL Speedway and Wilmot NW 6 0 0% 4 2 33% 4 2 33% Tucson, AZ CTL Tanque Verde and Sabino Canyon NE 6 0 0% 4 2 33% 5 1 17% 114

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From page 115...

... NCHRP 3-78b: Final Project Report April 2016 Table 7-6: On Island Error Rates for Criterion 1 and 3 at Roundabout Sites Site Name Site Type Intersection Approach Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Ann Arbor, MI RBT Ellsworth and State W Entry 6 2 25% 6 0 0 Ann Arbor, MI RBT Ellsworth and State W Exit 7 1 13% 6 1 14% Ann Arbor, MI RBT Nixon and Huron S Entry 7 0 0% 7 0 0% Ann Arbor, MI RBT Nixon and Huron S Exit 6 0 0% 6 0 0% Cary, NC RBT Old Apex and Chatham W Entry 8 2 20% 7 2 22% Cary, NC RBT Old Apex and Chatham W Exit 8 2 20% 7 2 22% Columbus- Hilliard, OH RBT Cemetery and Main N Entry 6 9 60% 7 0 0% Columbus- Hilliard, OH RBT Cemetery and Main S Entry 17 5 23% 12 8 40% Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Entry No Data No Data No Data No Data No Data No Data Greenbelt, MD RBT Cherrywood and Greenbelt Metro W Exit 0 1 100% No Data No Data No Data Oakland County, MI RBT Farmington and Maple E Entry 6 1 14% 2 4 67% Oakland County, MI RBT Farmington and Maple E Exit 3 0 0% 2 1 33% Oakland County, MI RBT Farmington and Maple S Entry 8 1 11% 8 0 0% Oakland County, MI RBT Farmington and Maple S Exit 5 0 0% 1 4 80% 115

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From page 116...

... NCHRP 3-78b: Final Project Report April 2016 Table 7-7: On Island Error Rates for Criterion 1 and 3 at Channelized Turn Lane Sites Site Name Site Type Intersection Missed Crosswalk Success Missed Crosswalk Failure Missed Crosswalk % Failure Initial Alignment Success Initial Alignment Failure Initial Alignment % Failure Boulder, CO CTL Arapahoe and Foothills SW 9 1 10% 9 0 0% Boulder, CO CTL Foothills and Baseline NE 7 3 30% 1 8 89% Boulder, CO CTL Foothills and Baseline SW 9 1 10% 5 4 44% Boulder, CO CTL Canyon and 28th SW 10 0 0% 7 3 30% Boulder, CO CTL Pearl and 28th NE 10 2 17% 7 3 30% Boulder, CO CTL Pearl and 28th NW 7 3 30% 5 2 29% Cary, NC CTL Kildaire Farm and Tryon W 2 8 80% 1 1 50% Greenbelt, MD CTL Kenilworth and West NW 5 5 50% 7 1 13% Tucson, AZ CTL Grant and Oracle NE 6 0 0% 5 1 17% Tucson, AZ CTL Grant and Oracle SW 5 1 17% 2 3 60% Tucson, AZ CTL Speedway and Wilmot NW 4 2 33% 3 1 25% Tucson, AZ CTL Tanque Verde and Sabino Canyon NE 5 1 17% 4 1 20% 116

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