An Evaluation of Bike Lanes Divya Nagananda and
An Evaluation of Bike Lanes Divya Nagananda and Dr. Emelinda M. Parentela California State University, Long Beach June 26, 2012 Santa Barbara ITE 2012
Overview �Introduction �Study Area �Data Collection �Analysis (Accident and Statistical) �Online Survey �Conclusions Santa Barbara ITE 2012
Introduction • City of Long Beach • Bicycle Master Plan • Bicycle Classes – Class III Santa Barbara ITE 2012
Bicycle Classes Class I Bicycle Lane Santa Barbara ITE 2012 Class II Bicycle Lane Class III Bicycle Lane Source: Alta Planning + Design, 2009
Study Area Class I - 3 rd Street between Daisy Avenue and Atlantic Avenue Santa Barbara ITE 2012
Study Area Class II – 2 nd Street between Livingston Drive and Pacific Coast Highway Santa Barbara ITE 2012
Study Area Class III - Pacific Coast Highway between Los Coyotes Diagonal and Orange Avenue Santa Barbara ITE 2012
Data Collection �Accident Data Santa Barbara ITE 2012
Bicycle Accident Location – 3 rd Street Santa Barbara ITE 2012
Bicycle Accident Location – 2 nd Street Santa Barbara ITE 2012
Bicycle Accident Location – Pacific Coast Highway Santa Barbara ITE 2012
Accident Analysis – Primary Cause Santa Barbara ITE 2012
Accident Analysis – Primary Cause Santa Barbara ITE 2012
Accident Analysis – Primary Cause Santa Barbara ITE 2012
Accident Analysis �Day versus Night Santa Barbara ITE 2012
Statistical Analysis �Student T-test �No significant differences by year in the number of accidents on all locations EXCEPT § SIGNIFICANT - 2 nd Street – 2009 ü Might have caused confusion among motorists and bicyclists ü 2010 - reduction in the number of accidents ü Green lane with sharrows is helpful in improving the safety of bikers and motorists ü Insufficient data to draw definite conclusion Santa Barbara ITE 2012
Online Survey �Online survey via Kwiksurveys. com �Focused on issues related bicycling trend and safety �Reached through various bicycle coalitions �Got about 90 responses Santa Barbara ITE 2012
Online Survey Responses – Quick Look � 88% respondents rode bicycles Santa Barbara ITE 2012
Online Survey Responses – Quick Look Santa Barbara ITE 2012
Online Survey Responses – Quick Look �Bicycling Frequency � 37% - 5 to 7 days in a week � 29% - 1 to 4 days in a week � 34% - Couple of days in a month �Bicyclist in a Collision � 21% - Motor Vehicles � 5% - Other Bicyclists � 5% - Pedestrians � 15% - No bike lanes � 5% - Sidewalk; � 3% - Crosswalk Santa Barbara ITE 2012
Online Survey Responses – Quick Look �Most Common Problems � 32% - Not sharing the roadway � 32% - Inadequate bicycle lanes/facilities � 13% - Vehicles parked on the bicycle lanes � 11% - Another bicyclist on the wrong side � 6% - motorists opening door without checking �Bicycle Class prone to accidents � 40% - Class III � 35% - Class II � 5% - Green lanes with sharrows; � 5% - Class I � 15% - No Answer Santa Barbara ITE 2012
Online Survey Responses – Quick Look �Overall Improvements to Enhance Safety � 36% - More bicycle lanes � 29% - Drivers should be more considerate � 19% - Traffic calming measures � 6% - Better traffic signals � 2% - Better street lighting � 8% - No answer Santa Barbara ITE 2012
Conclusions �Research in Progress �Data Still in the Process of Analysis �Per Initial Analysis �Class III – highest number of accidents �Felt to be the least safe �Primary Cause varies with Class �Class III – due to motorists, pedestrians & wrong side of the road �Class II – mostly due to motorists Santa Barbara ITE 2012
Acknowledgements �Staff, City of Long Beach § Mr. David Roseman, § Mr. Alan Crawford, and § Mr. Steve Tweed �Online Survey Respondents Santa Barbara ITE 2012
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