1 Non-motorized Sidepath Safety Analysis and Design Guidelines 5th Annual Summer Conference on Livable Communities Western Michigan University June 21, 2018 Project background • A sidepath is a type of shared use path located parallel to a roadway • Usually bi-directional • Usually separated from the road with a buffer MDOT Sidepath Safety Research 2
12
Embed
Non-motorized Sidepath Safety Analysis and Design Guidelinescode described by Pedestrian and Bicycle Crash Analysis Tool (PBCAT) MDOT Sidepath Safety Research 7 Crash analysis methodology
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
1
Non-motorized Sidepath Safety Analysis and Design Guidelines
5th Annual Summer Conference on Livable Communities
Western Michigan University
June 21, 2018
Project background
• A sidepath is a type of shared usepath located parallel to a roadway
• Usually bi-directional
• Usually separated from the roadwith a buffer
MDOT Sidepath Safety Research 2
2
Project background
• In suburban conditions,sidepaths offer a greatcompromise
• Bicyclists find themcomfortable, but engineersworry about safety
MDOT Sidepath Safety Research 3
Project background
• Research and best practicesrelated to sidepaths are limited
• None yet in Michigan
MDOT Sidepath Safety Research 4
3
• Crash analysis
• Resident survey
• Design guide development
• Educational materials
MDOT Sidepath Safety Research 5
Key research efforts / outline
• Three components of crash analysis:1. Statewide analysis
2. Case-control for eight counties
3. In-depth examination of two high-crash counties
• Sidepath vs sidewalk in the data
• Exposure
Crash analysis work led by Wayne State University
MDOT Sidepath Safety Research 6
Crash analysis methodology
4
• 11,305 statewide crashes 2010-2015
• Data collection efforts included usingstate crash records, police crashreports and GPS locations toexamine road geometry
• Each crash assigned a three-digitcode described by Pedestrian andBicycle Crash Analysis Tool (PBCAT)
MDOT Sidepath Safety Research 7
Crash analysis methodology
• Research team initially attempted a case-control of 110 pairs, at 220 sidepathsites around the state
• After running bivariate and multivariate analyses, no statistically significantresults
MDOT Sidepath Safety Research 8
Case control : the best of intentions
5
• Primarily urban/suburbancounties
• Large number of sidepathsin a variety of conditions
• Southeast and WesternMichigan
• Total of 2,253 bicyclistinvolved crashes from2010-2015
MDOT Sidepath Safety Research 9
Oakland and Kent counties
MDOT Sidepath Safety Research 10
Crash analysis findings – injury severity
5%
35%
42%
0%
18%
Injuries for Sidewalk/Sidepath Bicycle Crashes
11%
37%
35%
2% 15%
Injuries for Roadway Bicycle Crashes
Disabl ing Injury
Poss ible Injury
No Injury
Fatal
Evident Injury
6
MDOT Sidepath Safety Research 11
Crash Analysis Findings – PBCAT Categories
#1 and #2 Motorist Drive Out Sign (#1) and Signal (#2) Controlled #3 Motorist Left Turn Opposite Direction
MDOT Sidepath Safety Research 12
Crash analysis findings – bicycle travel direction
31%
Crashes on sidepaths/sidewalks Bicycle traveling with traffic
7
MDOT Sidepath Safety Research 13
Crash analysis findings – bicycle travel direction
65%
Crashes on sidepaths/sidewalks Bicycle traveling against traffic
MDOT Sidepath Safety Research 14
Crash analysis findings – bicycle travel direction
Sidepath warning sign for motorists (CDOT)
Watch for turning vehicles sign for bicyclists (VDOT)
8
• Random sample of about 5,000Michigan residents
• Letters explaining survey printed inEnglish and Spanish
• 351 responses, for a 7% responserate
• Only one respondent per householdwho was 18 years or older
• $5 ‘gourmet coffee gift cards’ wereprivately-donated and acted as anincentive
MDOT Sidepath Safety Research 15
Resident survey methodology
• Images were used on survey asvisual aid to help participantsidentify facility preference
• Participants asked about near-missesthey experienced as drivers andbicyclists
MDOT Sidepath Safety Research 16
Resident survey methodology
9
MDOT Sidepath Safety Research 17
Resident survey findings
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
I would like to see more people bicycling in my city.***
I like the idea of sometimes walking or biking instead oftaking the car.***
Getting regular exercise is very important to me.***
I like bicycling.***
Percentage of respondents who agree/strongly agree