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Article

Bike Station Suitability on University Campus Using Origin–Destination Matrix—A Morgan State University Case Study

Transportation and Urban Infrastructure Studies, Morgan State University, Baltimore, MD 21251, USA
*
Author to whom correspondence should be addressed.
Submission received: 24 June 2019 / Revised: 18 July 2019 / Accepted: 19 July 2019 / Published: 21 July 2019

Abstract

:
In contemporary times, bike sharing programs are gaining importance as an influential transportation mode in both urban and rural areas. They are also used as a vital transportation mode on university campuses which serve as a healthy and environmentally-friendly transportation system. However, having an appropriate location for a bike station is important, so as to maximize the benefits of the service. This study used an origin–destination (O-D) matrix to identify appropriate bike station locations at the Morgan State University campus. The O-D matrix analysis identifies three locations Cumming Hall/University Health Center, Rawling Hall, and Center for Built Environment and Infrastructure Studies as the most appropriate locations to start a pilot, which will serve most of the campus (students, faculty, staff) and connect them to the maximum number of facilities at Morgan State University. The O-D matrix takes into account the occupancy or population of individual buildings based on enrollment over the past four years, the distance to the center of the campus where maximum facilities including the graduate and undergraduate offices are located, and the frequency of the university shuttle connecting most of the buildings. This methodology can be replicated and used on other university campuses and will help further bike sharing programs.

1. Introduction

In recent years, bike-sharing systems (BSS) have created their place as an attractive mode of transportation for short trips. More than 400 cities have already installed the BSS around the world and an approximate half million bikes are publicly available around the globe [1,2]. According to the global map of bike-sharing cities [3], there are 1993 active bike-share programs while 378 programs are under construction. People can take a short one-way trip whenever they need, which is also a healthy way of commuting. It also helps to increase last mile connectivity by enhancing access to public transportation modes [4]. Travel behavior studies indicate that millennials are willing to drive less and are more interested in shared transportation systems [5,6]. Thus, it is safe to say that bike-share is an ideal transportation mode for the people who are environmental and health conscious and prefer to do short commutes [4,6,7].
In any university, transportation is a vital issue. The goal of any campus bike-share program is to provide students, faculty, and administrators access to a healthy, environmentally-friendly transport systems. Bike-share programs in different universities have shown successful implementations [6]. Most of the university campuses in the United States have a layout and land use, which is bike and pedestrian friendly [8,9,10]. On some urban university campuses, parking spaces are a constraint and can be expensive. Bike-share could be an ideal complement to an existing campus-supported transit system by possibly filling in the gaps where existing transit systems may not reach. It is an environmentally friendly transportation system compared to motor vehicles which can complement existing university shuttle systems. Bike-share can reduce carbon emissions, foster a sense of community, and increase an appreciation of the environment. Cornell University, Stanford University, Buffalo State University, Fresno State University, Georgia Tech University, MIT, University of Oklahoma, University of Vermont, and Towson University are some of the universities who have successful bike-share programs [11]. Figure 1 shows some of the universities with bike-share programs and the number of bike stations at each university.
Table 1 lists the demographics of a few universities with bike-share programs.
There are many success stories of campus bike-share programs. At Brandeis University, a lottery system was conducted to provide free bicycle rentals as the demand for bicycle riding among students and other professionals on campus was very high [25]. Tufts University reported positive results for their bike share program [26], while the University of New England solved their parking space problem by providing bicycles to all incoming freshmen [27]. They were able to convert the big parking lot to a basketball court and space for campus events.
There are specific criteria that need to be taken into consideration before starting a university campus bike-share program. A suitable bike station location is one of them [28]. Poor location of bike stations can compromise the success of the bike service. To facilitate more people, the distance between the stations and origin–destination points need to be small. The distance between stations also needs to be appropriate for bicycle riding [29]. To identify appropriate locations for bike stations, different studies used different methodologies. One of the popular optimization models is a facility location model used by researchers for the relocation of bicycle stations [30,31]. Chen et al. [32] used a semi-supervised feature selection method on open urban data of Washington D.C and Hangzhou, to recommend places for bike stations which have higher bike trip demand. Frade and Ribeiro [33] used a maximal covering location approach which helps locate the bike-share stations as well as the dimensions of the system. Lin and Yang [28] used a nonlinear integer program to select the optimal location of docking stations. Martineez et al. [34] consider a fleet size and bicycle relocation for a regular operating day and optimize the bike-station location through a mixed-integer linear program. Different GIS-based models like location-allocation [35] and origin–destination [36,37] are also popular methods for identifying suitable bike station locations.
In this study, appropriate bike station locations for Morgan State University community will be identified using an origin–destination (O-D) matrix, a GIS based spatial approach. Morgan State University is located in Baltimore Maryland, which used to have a bike-share program with 21 bike stations throughout downtown Baltimore [38], currently supporting dockless bikeshare programs—such as Lime, Bird, etc. According to the National Association of City Transportation Officials (NACTO) [39], the most visible component of the bike sharing system are the bike station locations. Therefore, finalizing the location of a bike station is one of the most challenging aspects of the planning process for a bike-share system. Appropriate placement of bike stations can attract riders, contribute to the holistic design of road safety, generate value for sponsors, and add activity to the realm of pedestrians. Inappropriate placement of bike-share stations can lead to inaccessibility, reduction in ridership, disruption in pedestrian, cyclist, or vehicular movements and may lead to complaints from the community [39].

2. Materials and Methods

2.1. Study Area

Morgan State University covers an area of more than 143 acres. Every year, more than 7700 students enroll at Morgan state university [40]. As of 2018, the university employs 1556 academic and 437 administrative staff. The university’s academic schools and programs include the College of Liberal Arts, School of Architecture and Planning, Earl G. Graves School of Business and Management, School of Community Health and Policy, School of Computer, Mathematical, and Natural Sciences, School of Education and Urban Studies, School of Engineering, School of Global Journalism and Communication, School of Graduate Studies and School of Social Work. The administrative sections and other university resources like the graduate office, the admissions office at the Montebello complex, university student center, health center, Earl S. Richardson library, gymnasium, stadium, chapel, art gallery, student housing, and food courts. The Morgan State University study area is shown in Figure 2. Approximately 2000 students are housed in four traditional residence halls, two high rise buildings, and three apartment complexes. Baldwin Hall, Cummings Hall, Harper-Tubman House, and O’Connell House are traditional style housing. Blount Towers (all female) and Rawlings Hall (all male) are six-eight floor high-rise residence halls. Thurgood Marshall is a co-ed apartment-style complex located on-campus while Morgan View Apartments and Marble Hall Gardens are co-ed apartment-style residence hall complexes located off-campus. Morgan View is a privatized facility that caters to Morgan State students [41]. The current university shuttle service, commonly known as ‘BEARtransit’, connects major university buildings on weekdays from 7:00 a.m. through 11:00 p.m. when semester is in session and 7:00 through 6:00 p.m. during spring and summer sessions. These shuttles run approximately every 15 min with no weekend service.

2.2. Data Acquisition and Preparation

The data acquisition process for this study was based on secondary sources. Location of the origin and destination points needed to run the O-D matrix along with the necessary data (services and departments) were extracted from a 3D map provided on the Morgan State University website. It is necessary to have an error-free road network to run the O-D Matrix as a network dataset on a GIS platform. The road network dataset was extracted from the open street map website. Topology tool from ArcGIS network analyst was used with the criteria: ‘must not overlap,’ ‘must not have pseudo nodes’, and ‘must not have dangle’ to make the road network error-free to run the O-D matrix. The enrollment and employment statistics from 2015–2018 was made available to the authors by the Morgan State University administration office.

3. Origin–Destination Matrix Development and Analysis

3.1. Identifying Suitable Locations

A generic flow diagram showing the methodology used in this study is shown in Figure 3.
For identifying suitable locations for the Morgan State University bike-share stations, an O-D matrix was developed using ArcGIS, a geospatial analysis platform. In general, an O-D matrix is necessary for planning an excellent public transportation system [42]. There are a couple of studies which indicate that, the provision of sufficient number of bike stations increases bike usage [2,43]. Researchers like Zhou et al. [37] conducted their research by visualizing the large-scale movement data of the bike’s origin and destination to identify the correlation of the O-D flows. He et al. [36] also used origin–destination data in a simple line clustering method, to analyze the applications of bike-sharing movement data. Their approach was effective in discovering clusters at different scales and can be applied to different O-D data to make pattern recognition less complex and easy to comprehend. According to Ekowicaksono [42], an O-D matrix helps identify the movements in a confined area and plays a vital role in public transportation planning. In this study, several factors were considered for the origin and destination points. Factors considered were the university population movement and services provided at the destination points, readily available spaces for establishing the bike docks for the new bike-share locations, distance from the destination and center of the campus, and zone-wise lack of frequent shuttle service. On an average, people are not usually willing to walk more than four blocks which amounts to approximately 300 m [44]. Keeping this in mind, a maximum walking distance of 300 m was chosen as an appropriate distance for candidate locations for bike stations, from prospective university buildings to travel to their respective destinations. This study was conducted based on the idea of a gravity model, where one can select one or more specific locations out of a number of origin and destination locations based on interdependent determining factors—i.e., service, population, distance, etc.—within a standard sized service area. The factors will determine the attraction score for the destination points and the location of these within the service area of origin points will eventually recommend the result of the selection.
In this study, the buildings were considered as destinations depending on the number of departments and services that are attracting the student, faculty, and staff populations. On the other hand, availability of multiple open-air parking spaces, readily available for establishing bike-share stations to minimize cost were considered as the origin points, where users can pick up and drop off the bikes. The output of the O-D matrix is shown in Figure 4.

3.2. Score Calculation

Calculations of the scores were needed to identify a suitable location for establishing bike-share docks. Depending on the multiple dependent factors, three types of scores were calculated for these two O-D datasets within three zones; North, Central, and South, following the zonal distribution of the campus shuttle. Firstly, the score of the buildings (destination) was calculated depending on the number of departments housed in the building and the number of services available. The second type of score was assigned to the destinations based on the population of the buildings. The third score was provided to the origin points (parking locations) considering the distance from the center of the university campus. Therefore, depending on the connection between origin and destination, final scores were calculated for the origin points in the three zones. A list of services considered for this study is shown in Table 2.
The normalized value of each building because of population, services, and distance was transferred as the total score for the origin points with maximum coverage. The formula applied to measure the value (D1, D2…..) of each destination is
D = P P m a x + S S m a x
where,
  • P = Number of departments in each building;
  • S = Number of services that can be accessed in each building.
Pmax and Smax were used to normalize the values for getting a standardized measure. Calculating the destination score, it was transferred to the origin point (O1, O2…) along with the distance of that point from the center of the campus. The formula is given below
O = ( D 1 + D 2 + + D n ) + d d m a x
where,
  • d = Distance of origin points from the center of the campus
All the destination scores that are connecting each origin point were summed together with the normalized distance value of that origin point to identify the value of that point. The scores were based on distance, the population of the buildings and services available at the buildings and shuttle stops at the building. The population covered by each Origin point is shown in Figure 5.
Finally, the total suitability score of the origin points in all three zones were calculated. These are just arbitrary numbers based on normalized values and thus the three highest scores from the North, Central, and South zones were selected as suitable locations for establishing bike-share stations for the students, faculty, and staff of Morgan State University. Figure 6 shows a flow diagram of the suitability score calculation process.
Table 3 provides a sample snapshot of the scores along with the campus population served at the origin points.
These selected locations not only follow the maximum coverage rules but also consider the population which is dependent upon two factors—(a) departments and (b) services. Prior studies have shown that, the weighted value of the population plays a significant role in selecting a location for bike-share services.

4. Results and Discussion

A number of factors like population, distance, facilities are essential in computing the normalized score of the origin and destination points. To run the O-D matrix in the GIS environment, it is necessary to specify the criteria such as cut off values, number of locations to identify and the maximum coverage area. As mentioned in prior studies [44], people are willing to walk up to 300 m from their origin/destination to use bike-share service. So, in this study, the maximum coverage area used was 300 m from the destination point, and a connection was built to the origin points within this area using the O-D matrix. Scores of the destination points added to the distance score of the origin points helped evaluate the suitable locations for the bike-share stations in each zone. All three types of scores were weighted equally to simplify the process of evaluation. Each of these scoring criterions interdependent variables that were calculated separately in this study, were finally added together to identify the final locations. The top bike-share station locations identified from each of the three zones are shown in Figure 7.
Table 4 displays the details of the selected locations for the bike-share stations. It can be seen that the number of services from the first location (Central Zone) is highest along with the number of the population served. On the other hand, the second location (South Zone) has a lower service number, but the density of the population supported at this location is comparatively very high. Similarly, although the third location (North Zone) has a lower total score compared to the first two, the distance from the center of the university was highest and this score was higher than other candidate locations. This simplified model applies fast calculation, and displays the influence of variables on each other, which has a significant impact on determining suitable bike-share station locations on a university campus.
Location 1. (Central Zone)—Cumming Hall/University Heath Center—The land use and infrastructure pattern of Morgan State University allows available open air parking spots in this area. Within the 300 m surrounding this service point, there is a noticeable amount of population movement. Major facilities are the Earl S. Richardson Library, University Health Center, Student Housing, University Field, University Student Center, Bank, Administration and Admission office.
Location 2. (South Zone)—Rawling Hall—This location for a bike-share station will serve both residential and floating students as well as the people who visit university for information, financial assistance, international affairs, etc. Considering the university map, it is noticeable that this location mainly serves the population of the southern portion of the university.
Location 3. (North Zone)—Center for Built Environment and Infrastructure Studies—This is the most distant point from the center of the campus. It houses a total of eight departments, ATM booth, food kiosk, couple of conference halls, multiple computer and other engineering laboratories, one medium size open air parking lot, and a two-storeyed parking facility. A high number of student, faculty, and staff trips are available in this area as this location is serving the largest school of the University, School of Engineering.

5. Conclusions

This study used an O-D matrix to identify appropriate bike-share station locations at Morgan State University. The O-D matrix used the population of each building, the distance to the center of the campus where maximum facilities, including the graduate and undergraduate offices, are located and the frequency of the university shuttle connecting most of the buildings. The score of the buildings (destination) was calculated depending on the number of departments housed and the number of services available in the building. The second type of score was assigned to the destinations based on the total number of the population using each of that. The third score calculated for the origin points (parking locations) considered the distance from the center of the university campus. The analysis results identified a total of three locations from the three zones of campus shuttle zonal service area, which will serve most of the population at Morgan State University and connect them to different facilities on campus. These three locations are appropriate to start a pilot program for a bike-share system which will able to cover most of the campus area. Once the pilot has been evaluated based on usage, additional bike-share stations can be setup using the same methodology. The methodology adopted in this study is a simple and straightforward process to identify suitable locations to establish bike share stations. This study can be replicated and used on other university campuses, depending on landuse patterns, areal extent, population, and other factors, which will help further bike-sharing programs and enhance transit on university campuses in an environmentally friendly manner.

Author Contributions

Conceptualization, N.K.K., S.B.; methodology, M.K., N.K.K., and S.B.; Data collection, M.K. and N.K.K.; Analysis and interpretation, M.K. and S.B.; Writing—review and editing, N.K.K., S.B., and M.J.; Visualization, M.K.

Acknowledgments

The authors would like to thank the administration of Morgan State University for helping provide the statistical information used in the study.

Conflicts of Interest

The authors declare no conflict of interest.

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Figure 1. Select university bike-share programs by number of bike stations.
Figure 1. Select university bike-share programs by number of bike stations.
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Figure 2. Study Area Map—Morgan State University, Baltimore, Maryland.
Figure 2. Study Area Map—Morgan State University, Baltimore, Maryland.
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Figure 3. Flow diagram of the study methodology.
Figure 3. Flow diagram of the study methodology.
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Figure 4. Connections built within 300 m from O-D matrix analysis.
Figure 4. Connections built within 300 m from O-D matrix analysis.
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Figure 5. Population classification served by each origin point.
Figure 5. Population classification served by each origin point.
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Figure 6. Flow diagram of suitability score calculation process.
Figure 6. Flow diagram of suitability score calculation process.
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Figure 7. Selected locations for bike-share stations.
Figure 7. Selected locations for bike-share stations.
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Table 1. Some universities who have successful bike-share programs.
Table 1. Some universities who have successful bike-share programs.
University NameArea (Acres)Setting2019 EnrollmentBike RacksBike Stations
Yale University345City12,9743648
Drexel University96Urban21,940950
Webster University47Suburban12,75034
Cornell University745Rural23,016-5
Stanford University8180Suburban17,178440
Portland State University50Urban27,3051000+4
University of Minnesota1204Urban51,8481820
Buffalo State University125Urban95168711
California State University—Fresno363Urban25,16890
Georgia Tech University400Urban29,376 6
MIT166Urban11,466150+12
Towson University329Suburban22,705 18
Sources: [12,13,14,15,16,17,18,19,20,21,22,23,24].
Table 2. Name of the services provided in the buildings of Morgan State University.
Table 2. Name of the services provided in the buildings of Morgan State University.
NoName of the ServicesDescription
1Administrative OfficeThis includes offices like Admissions, Finance, Record & Registrar, BearCard (ID, Parking, Access etc), Business & Auxilary Services, International Student & Faculty services, Bursar, Telecommunication etc
2Schools and CollegesThe Schools & Colleges include School of Engineering, School of Architecture & Planning, College of Liberal Arts, School of Business Administration, School of Global Journalism; School of Computer, Mathematics & Natural Science, School of Social Work.
3AdvisingUnder the student development program, the Advising service includes Highlighting the Academic Success & Achievement to inspire students, Entreprenuer development & Assistance, Student Enrichment Program, Writing center, Supporting students in preparation for College.
4DivisionsFinance & Management, Enrollment Management & Student Success, Planning & Information Technology, Reseach & Economic Development, Student Affairs.
5Campus HousingCampus housing service provides residence facilities to the undergraduate and graduate students from out of state, local as well as international.
6Campus Services (i.e., ATM, LAB, Dining, Health Center, Shop, etc.)For a full functioning campus several services are needed for students, faculties and staff. Services included as campus service are ATM & Banking, Health Center, Shop, LAB, Dining, Cafetaria, Recreational Center, Counselling Center, Gymasium, Field, Chapel.
7Points of Interest (i.e., campus highlights, arts, etc.)In every campus, few points are considered as important locations where population movement is maximum during different times. These points of interest consist of Art Galleries, Dance Studio, Student Center Circle, Student Clubs, University Museum (Morgan State University being a 152 years old Historical Educational Institute).
8Transit StopsTransit stops include stops of campus shuttle and college town shuttle.
Table 3. Sample snapshot of score and campus population served by zone.
Table 3. Sample snapshot of score and campus population served by zone.
No.Building NameTotal Score from Departments & ServicesDistance Score of the Origin Point from the Center of the CampusSuitability Score SubtotalTotal Campus Population ServedZone
1Center for Built Environment and Infrastructure Studies3.050.823.87676North
2Clarence M. Mitchel Jr. Engineering Building3.050.813.86670North
3University post office2.70.813.5195South
4Rawling Hall4.311.235.542148South
5University Chapel4.770.435.2329South
6Communication center6.520.917.412038Central
7George McMechen Building10.171.0111.182976Central
8CummingHouse/University Health Center11.091.1112.22934Central
Table 4. Suitable bike station location details.
Table 4. Suitable bike station location details.
Location PositionTotal ScoreNumber of Destinations ConnectedPopulationDistance from the Center (in Miles)
1Cumming House/University Health Center12.202529340.10
2Rawling Hall complex5.54821480.41
3Center for Built Environment and Infrastructure Studies3.8736760.47

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Khadem, N.K.; Kabir, M.M.; Banerjee, S.; Jeihani, M. Bike Station Suitability on University Campus Using Origin–Destination Matrix—A Morgan State University Case Study. Urban Sci. 2019, 3, 74. https://0-doi-org.brum.beds.ac.uk/10.3390/urbansci3030074

AMA Style

Khadem NK, Kabir MM, Banerjee S, Jeihani M. Bike Station Suitability on University Campus Using Origin–Destination Matrix—A Morgan State University Case Study. Urban Science. 2019; 3(3):74. https://0-doi-org.brum.beds.ac.uk/10.3390/urbansci3030074

Chicago/Turabian Style

Khadem, Nashid K., Md Muhib Kabir, Snehanshu Banerjee, and Mansoureh Jeihani. 2019. "Bike Station Suitability on University Campus Using Origin–Destination Matrix—A Morgan State University Case Study" Urban Science 3, no. 3: 74. https://0-doi-org.brum.beds.ac.uk/10.3390/urbansci3030074

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