Asian Research Journal of Arts & Social Sciences 2(1): 1-11, 2017; Article no.ARJASS.30048 SCIENCEDOMAIN international www.sciencedomain.org Geo-Information and Distribution Pattern of Petrol Service Station in Sango – Ota Metropolis in Ado – Odo Ota Local Government Area, Ogun State, Nigeria S. A. Ogunyemi 1* , O. O. Ajileye 1, K. H. Muibi 1, A. T. Alaga 1, O. E. Eguaroje 1, S. A. Samson 1, G. A. Ogunjobi 2, J. E. Adewoyin 1, O. S. Popoola 1, M. O. Oloko-Oba 1 and O. O. Omisore 1 1Cooperative Information Network, National Space Research and Development Agency, Obafemi Awolowo University, Ile-Ife, Nigeria. 2Department Surveying and Geoinformatics, The Polytechnic, Ibadan, Nigeria. Authors’ contributions This work was carried out in collaboration between all authors. Authors SAO, KHM and OOA designed the study, wrote the protocol, first draft of the manuscript and supervised the work. Authors OEE, OOO, JEA, OSP and MOOO carried out all the field work and performed the statistical analysis. Authors SAS and ATA managed the analyses of the study. Author GAO managed the literature searches and edited the manuscript. All authors read and approved the final manuscript. Article Information DOI: 10.9734/ARJASS/2017/30048 Editor(s): (1) Shiro Horiuchi, Associate Professor, COC Promotion Office, Yamagata University, Japan. Reviewers: (1) Khairul Nizam Tahar, Centre of Studies for Surveying Science and Geomatics, Malaysia. (2) V. Sivakumar, Centre for Development of Advanced Computing, India. Complete Peer review History: http://www.sciencedomain.org/review-history/17439 Received 14 th October 2016 Accepted 18 th November 2016 Original Research Article Published 5th January 2017 ABSTRACT This study examined spatial pattern of petrol service station using nearest neighbor analysis, the inventory of service stations in terms of marketing official rank and mapping of petrol service stations with a view to providing a framework for the safety of citizen from fire hazards and to protect the immediate environment from fire menace. The data used for this research work was obtained from both primary and secondary data. Primary data included the coordinate point of both the petrol service stations and fire service stations using Global Positioning System (GPS) _____________________________________________________________________________________________________ *Corresponding author: Email: [email protected]; Ogunyemi et al.; ARJASS, 2(1): 1-11, 2017; Article no.ARJASS.30048 receiver. Secondary data included land use map of the study area, Administrative Map of Ado–Odo Ota and the list of petrol service station. The data were analyzed using geographic information techniques. From the data survey carried out, the result of the analysis showed that Ado- Odo Ota has one hundred and thirty-four (134) petrol service stations and one fire service station and most of these petrol service stations were located along the major road that passes through the centre of Atan Ota, Iyana Ota, Onipanu Ota, Ojuore Junction, Lagos - Abeokuta highway. The nearest neighbor analysis (NNA) for the spatial pattern of petrol service stations in each region revealed three major spatial distributions. The spatial pattern in Iju to Iyana and Iyana to Ojuore showed dispersed pattern, Abeokuta highway showed random pattern, while Sango Ota showed clustered pattern. Keywords: Nearest neighbor analysis; dispersed; clustered; petrol service station; spatial analysis. 1. INTRODUCTION use of automobiles (Cars etc), generators and other petroleum demanding plants. The Nigeria is a blessed nation or country with pathetic power situation in Ado - Odo abundant natural resources of which petroleum Ota local Government, Ogun State, being the products play a vital role in Nigeria’s economy industrial area has exacerbated the [1]. This petroleum products account for 78% of increasing demand for diesel/ petroleum Nigeria’s Gross Domestic Product (GDP) and products, leading to the increase of petrol also account for 90% of the Nigeria’s total service stations and consequently, with annual revenue and foreign exchange earnings less consideration of the minimum [2]. environmental safety requirements for their operations [6]. A petrol service station by definition is a public facility, where fuel (petrol, kerosene, diesel etc.) Town planner faces challenges of location of and lubricants for automobiles are sold. Most of public facilities and services which, as a result, these petrol service stations sell petrol, diesel exposes urban citizen to some dangers. Ado- and kerosene. And these fuels contain high Odo Ota is one of the local Government areas, in concentration of hazardous substance that Ogun state that experiences these problems that causes huge damage to human’s life and arises as a result of un-coordinated properties. The proliferation of petrol service development. The higher concentration of petrol stations is now a current trend in most of our service stations in the Local government urban area in the state [3]. area most especially in the city centre like Sango, Ota, Atan- Ota and Agbara has resulted in problem like traffic congestion, fire and Bolen [4] stated that every location on the explosion. Areas worst hit are Iyana Ota road surface of the earth has its analyzable merits and and Sango Ota road where there are demerits. Bolen categorized the factor into real higher concentration of traffic generating land physical condition and analysis physical uses which includes petrol service condition. Real physical is a visible condition of stations that are located to each other, with the site in relation to area such as land inadequate set-back from the residential unit condition, the wideness of the site, and the while some petrol service stations were sited on distance of the petrol service station to the the roundabouts. Therefore the need for highway. Analysis physical condition was a study on the spatial analysis of the distribution obtained from real physical condition such as and location of petrol service stations in Ado Odo population analysis, neighborhood factor, Ota Local Government using Geographic and competitor analysis. The two factors are Information System techniques becomes needed when sitting location for petrol service important, though different approaches had been station. previously used by different authors in other to have a conducive and aesthetic environment for The rise in urban population and the increase in working and living. automobile, generate various kinds of demands, one of which is petrol/ diesel [5]. This work focuses on the spatial distribution The rapid growth in population in most of our pattern of petrol service station in Ado Odo Ota urban centres in Ogun State has increased the Local government. This local government is most 2 Ogunyemi et al.; ARJASS, 2(1): 1-11, 2017; Article no.ARJASS.30048 populous and industrialized local Government in 1.1 Study Area Ogun state, Nigeria. The Study area is Ado-Odo/Ota Local The study is triggered by the fact that human Government in Ogun State, one of the 20 local population and the number of vehicle is governments of Ogun state, found in the south increasing in the area and from the observation it west part of Nigeria. The Local Government is seems there may be some difficulty the second largest in Ogun State and it's as regard spatial distributions of petrol headquarter is at Ota. Ado-Odo/Ota Local service stations in the area. Therefore, the Government in Ogun State lies between aim of the study is to examine the safety of Longitudes 2°53 E and 3°14 E, and Latitudes citizen from fire hazards and way to 6°39 N and 6°30 N. The Local Government protect the immediate environment from fire covers an area of 1460 square kilometres and menace while the objectives are to share boundaries with Lagos State in the South, map the distribution of petrol service stations, Yewa South (Egbado) and Ifo local Government take the inventory of petrol service in the West and Ipokia Local Government in the stations in terms of marketing official North East. The study area has an estimated rank and identify the spatial pattern in each population of 527,242, [7] with about Four region in the study area using nearest neighbor hundred and fifty (450) towns, villages and analysis. settlements, as shown in Fig. 1. Fig. 1. Ado – Odo Ota local government area 3 Ogunyemi et al.; ARJASS, 2(1): 1-11, 2017; Article no.ARJASS.30048 2. MATERIALS AND METHODS typed in Excel Microsoft word to create a simple database and it was converted to shapefile for The data used for this research work was further analysis. obtained from both primary and secondary data. Primary data include the coordinate point of both 3. RESULTS AND DISCUSSION the petrol service stations and fire service station using Global positioning system (GPS) receiver. 3.1 Spatial Distribution of Petrol Service Station in the Study Area Secondary data include land use map of the study area, Administrative Map of Ado –Odo Ota From the data survey carried out, Ado- Odo Ota and the list of petrol service station. The has one hundred and thirty-four (134) petrol topographic map was scanned, imported into service stations and one (1) fire service station ArcGIS environment and then georeference for and most of these petrol service stations were further analysis. The shapefiles were created in located along the major road that passes through ArcCatalog environment and it was used to the centre of Atan Ota, Iyana Ota, Onipanu Ota, digitize the roads, settlement, building, fire Ojuore Junction, Lagos - Abeokuta highway. The service station and petrol service station. Names numbers of petrol service station in the major and coordinates of petrol service station were road were shown in the Tables 1 to 4. Table 1. Inventory of petrol service stations by major road: Olorunda to Iju Ota road No Names Longitudes (E) Latitudes (N) Land use 1. Adesba 3.017538 6.683527 Adesba Hotel, Forest 2.