influential factors in children’s school travel: safe routes to school and beyond
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Influential factors in children’s school travel: Safe Routes to School and beyond. Tracy E. McMillan, PhD, MPH University of Texas at Austin [email protected]. Elementary School property. - PowerPoint PPT PresentationTRANSCRIPT
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Influential factors in children’s school travel:
Safe Routes to School and beyond
Tracy E. McMillan, PhD, MPH
University of Texas at Austin
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• The paradox of transportation in the late twentieth century is that while it became possible to travel to the moon, it also became impossible, in many cases, to walk across the street.
– Joell Vanderwagen, 1995. “Coming down to earth,” in Zielinski, S. and Laird, G. (eds), Beyond the car, Steel Rail Press, Toronto, pp.137-139.
Elementary School property
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Children’s travel behavior and health• Transportation Issues
– Significant mode shift in school travel over the past few decades
• 1969: 87% of school trips < 1mi. walk/bike, 7% private auto
• 2001: 55% of school trips < 1mi. walk/bike, 36% private auto
– Localized congestion/hazardous travel in school zone• Ped/bike highest rate of injury/fatality on per mile basis compared
to other modes of school travel
– Burden on household• Mothers are five times more likely to be transporting children than
fathers
• Trip chaining
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• Health issues – Low rates of overall physical activity
– Increase in age-adjusted prevalence of overweight• From 4% in 1963-65 to ~15% in 1999 youth aged 6-11• Mexican-Americans and non-Hispanic blacks disproportionately
represented in 12-19 age group
– School trip important contributor to overall daily physical activity
– Pedestrian injuries 2nd leading cause of unintentional injury death for youth aged 5-14
• 20,000 non-fatal pedestrian injuries for this age group in 2001
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Cost to the nation
• Heart disease: $193.8 billion (2001), health care & lost productivity
• Cancer: $189.5 billion (2003)
• Diabetes: $132 billion (2002)
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Is the built environment to blame for changes in travel and health behavior/outcomes?
• What some research shows: guilty by “association”– Two broad characteristics of
the pedestrian infrastructure associated with walking behavior
• Presence– Accessibility
• Quality– Safety
– Security
• However, there are limitations to this research– Focus on adult behavior:
their activities & destinations—does this transfer over to children?
– Little understanding of the structural relationship between variables of influence—no causal path
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The reality of influencing behavior
• It’s not as simple as we would like!– Not just tell them
what’s best and they’ll do it
– Not just build it and they’ll come
– Dealing with multiple factors that we can affect directly and indirectly
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Relative influence of built environment on children’s school
travel• Built environment does influence the probability of
walk/bike to school – Two significant variables: mixed use & windows facing street– What wasn’t significant? Sidewalks
• Magnitude of influence of individual built environment variables was small
• However, the overall effect of built environment did help in the prediction of the walking trip to school
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More influential factors on caregiver’s decision
– Perceptions of neighborhood & traffic safety
– Reported distance
– Social/cultural norms
– Parent’s attitudes & perceptions toward travel
– Sociodemographics
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Policy implications for SR2S
• Highlights the complexity of travel behavior
• Emphasizes the importance of correctly identifying problems before creating solutions
• Most cost-effective and equitable solutions for changing travel behavior may involve a multi-pronged approach (education, enforcement and engineering)
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Policy implications for SR2S
• The “experience of place,” not just the structure of space, affects behavior
• Built environment may still have significant impact on cost of development if outcomes of inactivity are quantified
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The California Safe Routes to School Program – Background and Evaluation
Marlon G. Boarnet1, Kristen Day1, Craig Anderson1, Tracy McMillan2,
Mariela Alfonzo1
1 University of California, Irvine2 University of Texas, Austin
Funding: UC Transportation Center and Caltrans
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SR2S Background
• Authorized by California AB 1475, 1999
• Renewed by SB10, 2001
• Renewed again by SB 1087, 2004
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SR2S Background
• AB 1475 authorized setting aside 1/3 of California’s federal Surface Transportation Program safety funds for two years for the SR2S program
• Motivation – high profile pedestrian accidents
• Coalition of safety, school, non-motorized transportation advocates
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SR2S Funding
• Projects funded at 90% / 10% state/local participation
• Projects capped at $450,000 of state (federal) funds
• Five cycles of projects funded so far– 455 projects– $111.7 million in federal funds– $124.1 million total funds
• Average project funding: $273,000
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SR2S Program
• Administered by the Division of Local Assistance within Caltrans
• Authorizing legislation required an evaluation by December, 2003, with funds for evaluation
• Legislative goals:– Increased pedestrian/bicycling safety near schools– Increased viability/frequency of walking/bicycling to
schools
• SR2S was, first, a safety program
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SR2S application
Recent Caltrans brochure states that successful local applications highlight:
• How the proposal supports an existing traffic safety or health promotion plan.
• How the application has been developed through problem identification using a "walkability checklist" or other audit tool.
• Demonstrated understanding about how proposed engineering solutions interrelate to enforcement, education and other strategies.
• Evidence-based estimates regarding the impact of the proposed project – both risk reduction and health promotion.
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SR2S evaluation
• Caltrans contract, pursuant to Streets and Highways Code 2333.5: $118,500
• University of California Transportation Center: $162,614
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Research Design
• Multiple Case Study Approach, 10 school sites• Before/After evaluation
– Traffic characteristics• Vehicle counts, vehicle speed, yield to non-
motorized traffic, walk/bicycling counts and on sidewalk/street
– Urban Design– Survey of parents of 3rd-5th grade children
• Did child walk more after SR2S construction?
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School Sites
• 16 Schools chosen, 10 completed SR2S construction by Fall, 2003
• Schools chosen based on:– Elementary school (70% of Cycle I schools elementary)
– Variation in urban/rural/suburban setting
– Represent six SR2S work types
– Willingness to be included in study
– Fit with research window, April 2002 through Fall, 2003
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Busy street proximate to Cesar Chavez Elementary School
New traffic signal at Loveland Avenue and Jaboneria Road
Cesar Chavez Elementary School
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Glenoaks Boulevard before installation of crosswalk lighting system
Glenoaks Elementary School
New pedestrian-activated, in-pavement crosswalk lighting system on Glenoaks Boulevard
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Decomposed granite pathway southeast from school along Morning View Drive
Northwest view of Morning View Drive from Juan Cabrillo Elementary School
New decomposed granite pathway near school
Juan Cabrillo Elementary School
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Adams Avenue before improvement Adams Avenue after sidewalk installation
Murrieta Elementary School
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New sidewalk at the San Pablo Dam Road and May Road intersection
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School City Med HH income (zip code)
% blocks w/ complete sidewalk
Cesar Chavez Bell Gardens $ 30,029 94%
Glenoaks Glendale $ 41,674 36%
Jasper Alta Loma $ 66,668 57%
Juan Cabrillo Malibu $100,857 17%
Mt Vernon San Bernardino
$ 23,498 63%
Murrieta Murrieta $ 61,494 8%
Newman Chino $ 55,185 86%
Sheldon El Sobrante $ 61,494 53%
Valley Yucaipa $ 39,286 22%
West Randall Fontana $ 35,008 36%
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School City % African-American (school)
% Hispanic (school)
Cesar Chavez Bell Gardens 0.2% 99 %
Glenoaks Glendale 1.7 % 18.5 %
Jasper Alta Loma 7.3 % 22.6 %
Juan Cabrillo Malibu 0.6 % 17 %
Mt Vernon San Bernardino
9.3 % 84.9 %
Murrieta Murrieta 7.6% 22.9 %
Newman Chino 3.1 % 56.4 %
Sheldon El Sobrante 26.3 % 22.1 %
Valley Yucaipa 1.8 % 24.1 %
West Randall Fontana 1.7 % 92.1 %
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Evaluation: Compare Outcomes to Expected Effects
SR2S Project Type Number of Schools
Sidewalk Improvements 5
Traffic Signal Improvements 2
Crosswalk / Crosswalk Signal 4
Bicycle Facilities 1
Traffic Diversion 0
Traffic Calming 0
Note: Some school projects are more than one type.
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Work Type Schools Sidewalk improvements
Sheldon, West Randall (primarily sidewalks) Murrieta, Valley, La Gloria (includes other work types), J uan Cabrillo, Ocean Knoll
Traffic calming & speed reduction
La Gloria, Hawthorne
Pedestrian/bicycle crossing
Mt. Vernon, J asper, Valley, Glenoaks
Bicycle facilities (on-street or off-street)
La Gloria, Murrieta
Traffic control devices
Cesar Chavez, Newman
Traffic diversion improvements
La Gloria, Sulphur Springs
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Study Methods
• Before/After Construction Data Collection at Each School
• Observations/Data Collection:– Traffic Characteristics– Survey of Parents of 3rd through 5th Graders– Observe Urban Design within ¼ Mile of School
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Traffic Observations
• Observations for two days before and after SR2S construction– 30 minutes before start of school to 15 minutes
after start of school– 15 minutes before end of school to 30 minutes
after end of school
• Teams of 3-4 observers
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Traffic Observations
• Vehicle Counts• Vehicle Speed (via stopwatch to time travel of car
for pre-marked distance between landmarks – human error estimated in analysis)
• Yielding of Vehicles to Pedestrians/Bicyclists• Pedestrian Counts and Locations (on street/path or
shoulder/sidewalk)• All data for 2-minute intervals – assess total and
“peak/off-peak”
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Parent Survey
• Distributed to parents of 3rd-5th grade children at all schools
• Before Construction Survey response rate ranged from 36% to 72% -- 51% response in full sample
• After Construction Survey response rate ranged from 23% to 57% -- 40% response rate in full sample
• 1,562 “before” surveys; 1,244 “after” surveys
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Parent Survey
• How child normally travels to school• Perceptions of safety• Perceptions of urban design and child travel• Attitudes• Demographic characteristics• Perceptions of traffic near school• Perceptions of social/cultural norms about
walking/bicycling• Assessment of SR2S project
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Urban Design
• Block by block assessment for ¼ mile around school
• Gives information on, e.g.,– % of blocks with complete sidewalk– % of blocks with bike lanes– Average block length– Number of lanes in street– Paving treatments– Cul-de-sacs– Street trees
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Evaluation
• Detailed data collection and analysis• Project impact assessed by comparing
“before” and “after” data• Impact assessed relative to expected impact
for each project• Example: traffic light expected to improve
yielding; sidewalk expected to change location and amount of walking
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How to Assess SR2S project effectiveness
• Amount of walking• Yielding of cars to non-motorized travelers• Location of walking (on or off sidewalk)• Vehicle speeds
For all of above, consider expected and measured impact of the project – a traffic light would have different expected effects than a sidewalk
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Sidewalk Gap Closure Results
School # Walk
Before
# Walk
After
% on
Street Before
% on Street After
T-stat
Sheldon 138 152 66% 35% 5.55
Valley 64 89 42% 4% 6.79
West Randall
692 1146 75% 5% 39.23
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Sheldon: Average Vehicle Speeds on San Pablo Dam Road
Before (mph)
After (mph)
% Change
a.m. off-peak 40.43 41.50 3% a.m. peak 33.69 32.29 -4% p.m. off-peak 39.30 31.96 -19% p.m. peak 36.02 31.68 -12%
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Sheldon: Safety Advantage from Shift of Walking to Sidewalk
San Pablo Dam Road after sidewalk improvement
San Pablo Dam Road before sidewalk improvement
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Traffic Control Device Results
School % Yield
(number)
Before
% Yield
(number)
After
T-stat
Cesar Chavez
95.42%
(584)
100%
(205)
5.42
Newman 94.86%
(277)
99.62%
(265)
3.44
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Another Looking at Walk/Bike Travel and SR2S
• “After Construction” survey askedWould you say that your child now walks
or bicycles to school:
a.Less than before the project described above was built.
b.The same amount as before the project was built.
c.More than before the project was built.
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Sort by Whether SR2S Project Along Route to School
• Survey asked if project was along child’s usual route to school
• 52% of parents said “yes”; 48% said “no”
Star indicates location of elementary school; Circle represents portion of neighborhood included in the study (approx. ¼ mile radius from the elementary school)
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After Construction Data
• 1244 returned “after construction” surveys from 10 schools
• School response rates varied from 23% to 54%
• Full Sample Response Rate: 40%
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Results, by School% Walk More % Walk More Diff
t-statistic n
Along Route Not Along Route
Cesar Chavez 20.59% 6.15% 14.43% 2.52 151
Glenoaks 12.00% 7.69% 4.31% 0.76 126
Jasper 3.13% 0.00% 3.13% 1.02 57
Juan Cabrillo 6.67% 0.00% 6.67% 1.04 32
Mt. Vernon 19.05% 5.71% 13.33% 1.85 87
Murrietta 13.73% 2.38% 11.34% 2.12 101
Newman 10.94% 0.00% 10.94% 2.80 101
Sheldon 15.63% 0.00% 15.63% 2.43 62
Valley 11.59% 0.00% 11.59% 3.01 97
West Randall 28.57% 7.41% 21.16% 3.15 139
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Walking/ Bicycling Impacts
Traffic Impacts
School
Project Description
Expected Versus Actual Outcome
Amount a
Location b
Yielding c
Vehicle speeds
Vehicle counts
Projects with Strong Evidence of Success Expected: Increase* ---- g Increase Decrease Decrease* Cesar
Chavez Traffic signal Actual d:
Increase ---- Increase Decrease Increase
Expected: Increase* ---- Increase Decrease ---- Glenoaks In pavement crosswalk lighting
Actual: Increase ---- Increase None ----
Expected: Increase On sidewalk ---- ---- ---- Sheldon Sidewalk gap closures
Actual: Increase On sidewalk ---- ---- ----
Expected: Increase On sidewalk ---- ---- ---- Valley Sidewalk gap closures
Actual: Increase On sidewalk ---- ---- ----
Expected: Increase On sidewalk ---- ---- ---- West Randall
Sidewalk gap closures
Actual: Increase On sidewalk ---- ---- ----
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Summary• Evidence that Outcomes Corresponded to
Expectations for 5 of 10 schools– Consistent evidence– Exceeds standard error or human error range– Magnitude large (excludes Murrieta)
• Criterion is measurable, near-term impact, and so excludes:– Increases in awareness/caution– Long-term infrastructure program progress
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Summary, Patterns from Evaluation
• Among 5 sidewalk gap closure projects, 3 had evidence of success– Primary success was moving walking off street/curb
• The two traffic signal projects increased vehicle yielding
• Crosswalk and crosswalk signal projects – no evidence, likely because success is more caution, which is difficult to measure
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Characteristic of Successful Projects
• In areas with pre-existing non-motorized travel to school in unsafe conditions
• Closing sidewalk gaps in areas where students walk is a good example
• Controlling vehicle speed or increasing driver awareness / caution
• Some projects were initial investment in infrastructure (e.g. 8% of blocks around Murrieta Elementary had complete sidewalk before SR2S.)
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Federal SRTS program• Passed in August 2005
• Dedicates $612 million to SRTS from 2005-2009
• Distribution of funds to states based on student enrollment– Each state will receive at least $ 1 million/yr– http://safety.fhwa.dot.gov/saferoutes/
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• Creates SRTS program in every state DOT– Requires hiring of a
full-time SRTS coordinator
• Kristie Billiar, MN DOT
• Targets grades K-8
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• Legislation also required development of clearinghouse/repository for SRTS activities
• National Center for SRTS– Based at Highway Safety Research Center at UNC-
Chapel Hill– Collaboration of many partners– www.saferoutesinfo.org
• Federal SRTS Task Force also required & currently being formed
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Focus on 5 E’s
• Engineering• Education• Enforcement• Encouragement• Evaluation
– Each state must allocate at least 10% of total funds (but no more than 30%) to non-infrastructure activities
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Urban Form
- Neighborhood safety
- Traffic Safety
- Household transportation options
- Social/cultural norms
- Attitudes
- Socio-demographics
Parental decision-making
Children’s travel behavior (trip to school)
Mediating factors Moderating factors
XX
Intervention point
Intervention point
Proximal evaluation point
Intermediate evaluation point
Change in health outcomes
Distal evaluation point
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Increasing the focus on children’s school travel in our communities
1) Policy/regulation Model language in comprehensive/general
plans, ordinances, etc
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General Plan Language
• Real Examples:– City of Los Angeles has a bicycle plan as part of the
transportation element of their general plan – for establishing a bicycle network
– Minneapolis Bicycle Plans
– Minneapolis General Plan“Minneapolis will continue to build, maintain and require
a pedestrian system which recognizes the importance
a network of private and public sidewalks which achieve
the highest standards of connectivity and amenity.”
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Minneapolis General Plan
• Require the most generous sidewalk width possible for public sidewalks located in high pedestrian volume areas, such as existing growth centers, neighborhood commercial areas, transit corridors and mixed use areas.
• Ensure that all sidewalk standards meet ADA requirements as mandated by law.
• Promote the development of design standards that produce high quality sidewalks for public and private sector development, with supporting street furniture (including street trees), ample widths for pedestrian traffic and transit loading, and the use of materials thatrequire acceptable levels of maintenance.
• Encourage all new developments to situate their front doors so that they open onto the public sidewalk.
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What is Missing?
• Schools
• Hypothetical Examples:– Mention of school siting and pedestrian /
bicycle transportation network near schools in community plans
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Increasing the focus on children’s school travel in our communities
2) Comprehensive, continuous and coordinated planning– between the school district, the local
municipalities and other stakeholders (e.g., local health department)
– addressing school siting, changing demographics in the community, externalities of school location, etc.
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Increasing the focus on children’s school travel in our communities
3) Education/awareness the public, stakeholders in the community, etc.