Divya Nagananda and Dr. Emelinda M. Parentela California State University, Long Beach June 26, 2012 Santa Barbara ITE 2012 An Evaluation of Bike Lanes

Divya Nagananda

and

Dr. Emelinda M. Parentela

California State University, Long Beach

June 26, 2012

Santa Barbara ITE 2012

An Evaluation of Bike Lanes

Overview


IntroductionStudy AreaData CollectionAnalysis (Accident and Statistical)Online SurveyConclusions

Introduction


• City of Long Beach• Bicycle Master Plan• Bicycle Classes– Class I– Class II– Class III

Bicycle Classes

Santa Barbara ITE 2012Class I Bicycle Lane Class II Bicycle Lane Class III Bicycle Lane

Source: Alta Planning + Design, 2009

Study Area


Class I - 3rd Street between Daisy Avenue and Atlantic Avenue

Study Area


Class II – 2nd Street between Livingston Drive and Pacific Coast Highway

Study Area


Class III - Pacific Coast Highway between Los Coyotes Diagonal and Orange Avenue

Data Collection


Accident Data

Bicycle Accident Location – 3rd Street


Bicycle Accident Location – 2nd Street


Bicycle Accident Location – Pacific Coast Highway


Accident Analysis – Primary Cause






Accident Analysis


Day versus Night

Statistical Analysis


Student T-testNo significant differences by year in the

number of accidents on all locations EXCEPT SIGNIFICANT - 2nd Street – 2009

Might have caused confusion among motorists and bicyclists

2010 - reduction in the number of accidentsGreen lane with sharrows is helpful in improving the

safety of bikers and motorists Insufficient data to draw definite conclusion

Online Survey


Online survey via Kwiksurveys.comFocused on issues related bicycling trend

and safetyReached through various bicycle coalitionsGot about 90 responses

Online Survey Responses – Quick Look


88% respondents rode bicycles





Bicycling Frequency37% - 5 to 7 days in a week29% - 1 to 4 days in a week34% - Couple of days in a month

Bicyclist in a Collision21% - Motor Vehicles5% - Other Bicyclists5% - Pedestrians

15% - No bike lanes5% - Sidewalk; 3% - Crosswalk



Most Common Problems32% - Not sharing the roadway32% - Inadequate bicycle lanes/facilities13% - Vehicles parked on the bicycle lanes11% - Another bicyclist on the wrong side6% - motorists opening door without

checkingBicycle Class prone to accidents

40% - Class III35% - Class II5% - Green lanes with sharrows; 5% - Class I15% - No Answer



Overall Improvements to Enhance Safety36% - More bicycle lanes29% - Drivers should be more considerate

19% - Traffic calming measures6% - Better traffic signals2% - Better street lighting8% - No answer

Conclusions


Research in ProgressData Still in the Process of AnalysisPer Initial Analysis

Class III – highest number of accidentsFelt to be the least safe

Primary Cause varies with ClassClass III – due to motorists, pedestrians & wrong

side of the roadClass II – mostly due to motorists

Acknowledgements


Staff, City of Long Beach Mr. David Roseman, Mr. Alan Crawford, and Mr. Steve Tweed

Online Survey Respondents

Documents

Divya Nagananda and Dr. Emelinda M. Parentela California State University, Long Beach June 26, 2012 Santa Barbara ITE 2012 An Evaluation of Bike Lanes