Accessibility of Centres to the Road Networks: Lagos Island

Accessibility of Centres to the Road Networks Lagos IslandTHE ACCESSIBILITY OF CENTRES TO THE ROAD NETWORKS THE CASE OF LAGOS ISLAND, NIGERIAMr. A. O. AtubiProf. P.C Onokala overturnProper co-ordination of transport and humanity facilities supplying is vital to any match regional development strategy. The central aim of this flying field at that placefore was to get hold of the human relationship among access code to the transport lucres and the provision of central facilities in Lagos Island. The results of the analytic thinking of connectivity indices reveal the development of an increasing complex mesh topology, although the despatch mesh topology for 1997 remained the same as that of 1986. Using simple regression analysis, it was found that no strong relationship among avenue, handiness and occurrence of facilities could be established. quite a population of centres was found to be more significant factor in the distribution of public facilities. Thus, recommen dations capable of enhancing equitable transport development imply constructing new alleys that leave alone increase on hand(predicate)ness, save time and visit cost to other centres and relocating round facilities too.IntroductionIn an urban argona, thither is a complex mix of land uses and every(prenominal) the canvass wide-eyed groupings of person movements (i.e.) journey to work, official trips, education trips by school children/students, shop trips, journey made to get home, an miscellaneous journeys) in urban aras are made mingled with them. Thus, objet dart trip are made for a variety of purposes, they are made to and from various land use Onokala. (1995). Oyelegbin (1996), ascertained that traffic jams keep Lagos motorist on the roads for hours and that many motorists are blaming frequent traffic Jams of numerous deep pot-holes, blocked drainages and poor road net income system. While the numeral of vehicles were increasing the road network home are non bet increased proportionately and even the living ones degenerate in quality at increasing rate.The Lagos Island topical anaesthetic political sympathies part is the single to the proudest degree important local government in Lagos introduce due to the fact that most government establishments private parastatals and public buildings are located here.It is immanent to appreciate that the purpose of transport is to will approachability, or the ability to make a journey for a ad hoc purpose. fascinate is not timed for its own sake, but is merely a means to an end.The construction of transport infrabody structure influences transport costs by is of a reduction of distances and/or a higher average speed. This will lead to changes in the choice of transport mode, route choice, time of going (in the case ingested networks) and the generation or attraction of new movements per zone (Bruinsma, et al 1994). For example, within several European countries both the private sectors, as represent by mobile shops, and the public sector for example mobile library, realize for many years brookd services on-wheels for rural communities.Existing services could in future he coordinated to ensure that each community in turn became the focus of several of these services, so that the hinterland population necessity make only one journey into the centre to take value range of facilities (Brian and Rodney. 1995).Thus, in the U.S.A. availableness studies in the late 1970s and 1980s centres on access to public facilities especially as observed by Lineberry (1977). Mladcnka 78), Mclafferty and Gosh (1982). In Nigeria several studies on handiness tend to be associate to urban centres or urban found activities. However, Onokerhoraye (1976) and Okafor (1982) sought to identify the major factors that influence distribution of post primary schools in Ilorin and lbadan respectively. They attributed the larger catchment areas to urban schools to travel distance to school and to population of urban centres. Bardi (1982) also investigated the relationship between growth of road network and availableness of urban centres in Bendel State, while Abumere (1982) tried to establish the nodal structure of Bendel State towns m the forward discussions of past studies in Nigeria we observed that the emphasis tends to be either on urban centres (Onokerhorave. 1976), postal services (Oherein, 1985), banking (Soyode et al. 1975), bus transport services (Ali, 1997) and access to facilities in relation to road network (Atubi, 1998). There is however a need to take a total vie of transport in terms of the various activities for which the users demand mobility (Jansen, 1978).MethodologyThis research focused in the first place on the study of road transport network system in Lagos Island local anesthetic governing body Area especially as it relates to availability of centres Thus, structural characteristics and accessibility of major centres to the road network was cons idered at three points in time i.e. (1976, 1986 and 1997 periods).In developing the research design, areas that are cordial to the road network and with population of 1,000 and above at each period were taken as activity centres. Population of 1.000 was chosen as cut-off point to enable a substantial number of centres, especially those at the end of routes to come forward as nodes especially as the network grows. The choice of nodes was therefore based on population size.Data Analysis and Discussions of ResultsIn order to furcate the major centres, information on six areas of central facility provision were collected namely Medical, educational, market, postal services, banking and administrative headquarters.Data on these chosen facilities were collected both from published sources and through and through field survey. A constitute of registered health facilities in the study area by 1997 compiled by the Lagos State Ministry of Health, Alausa. Ikeja list of primary schools i n Lagos Island topical anesthetic administration Area from the Lagos Island Local Education District Department, and monthly returns of postal facilities from post and Telecommunications (NIPOST) Marina, Lagos were used as the base data to collect the number of these facilities. More comparative data on the number and location of the services are collected from the ecumenical Post Office (G.P.O.) Marina. Lagos. The data on the distribution of banks in Lagos Island Local Government Area were collected from Central Bank of Nigeria, Lagos, while data on the distribution of markets were collected from the Department of marketing Lagos Island Local Government Secretariat. City Hall, Lagos.The accessibility of centres to the road network in Lagos Island Government Area was analyzed using the graph theory approach. It is used to handle properties to exaltation networks in order to bring out their characteristics and structures. Other major techniques of analysis used embroil the homo genization of data etc.By 1976, we had 22 out of the 30 major centres directly connected by all season roads. Each direct connection forms a link. As an fable by 1976, one could only move from race course to line Street (Net) before moving to C.M.S. ( sr. Marina). In this case we have 2 link along Race Course C.M.S. (Old Marina) road. In sum, 23 cogitate or edges were identified by 1976 which connected 22 nodes.By 1986, the network became more complex as more nodes are connected through disparate routes. However, the same principles are applied. It has been observed that by 1986 the 30 nodes had get connected by 39 links. That means 7 extra centres had entered into the network systems. These are Leventis. C.M.S. New Marina), Force Road. Awolowo Road, Ilubirin, Ebute-Elefun and Anokantamo.By 1997, the network remained the same as that of 1986 but the major difference was the construction of Third Main kingdom Bridge that links Lagos inland Local Government Area to Lagos Islan d Local Government Area. This was that since 1986, no major work has been done on the road network in Lagos and Local Government Area, hence the road network remained the same. Although, the indices of connectivity indicate increasing complexity of network between 1976 and 1997, the indices of nodal accessibility, which explain the accessibility of one node to all others in the network, indicate the changing fortunes some centres.It is interesting to note that in terms of overall road distance, the most accessible centres in 1976 were Tinubu, Martins and Balogun, while the least accessible were Race Course. Epetedo and C.M.S. (Old Marina).By 1986, we observed that Odularni had become the most accessible centre, while Tinubu and Nnamdi Azikiwe had become the morsel and Third most accessible centres in the network. Again, it was noted that Epetedo (Okepopo Marina), Ebute-Elefun, Anokantamo and ldumagbo remained the least accessible centres. Other new centres connected to the network at this state include C.M.S. Maria road), Force Road, Awolowo Road, Ebute-Eletun, Anokantamo and Idumagho. Their entry into the network has the effect of increasing the accessibility for all the nodes. However, by 1997 it was observed that odulami remained the most accessible centre which corresponds with the nodal accessibility by 1986, while Tinubu and Nnamdi Azikiwe remained the second and third most accessible centres in the network which also corresponds with the nodal accessibility by 1986. Again, it was observed that Eptedo (Okepopo Marina), Ebute_Eleflm, Anokautamo and ldumagbo remain the least accessible centres. Also he Tinubu-Nnamdi Azikiwe-Odulami-Bamgbose axis seems to have been enjoying high take of accessibility throughout the period. The more nodes are connected the greater the accessibility value for individual nodes. However, the entire network accessibility expands with increasing number of nodes brought into the network. Another observation is that there are som e nodes (Awolowo Road, Ilubirin. Force Road, and C.M.S. (New marina Road) that were not connected in earlier times but they acquired quite high accessibility as soon as they were connected. It is observed further that there are some nodes, which declined in accessibility as more links were added. Thus Tinubu, Odulami. Olowogbowo, Balogun and Broad Street among others, declined in accessibility. The construction of Leventis C.M.S. (New Marina Road) meant that a shorter route to cable street (net) from Force Road than through Tinuhu had been created. Other routes constructed preliminary to 1997, which reduced the position of Tinuhu, include martins Street-ldumota, C.M.S. (Old marina-Odulami and Okepopo. In this analysis. the researchers used the simple regression. A assertable relationship between accessibility and human activities has been suggested by Lachene (1965) and Chapman (1979) among others, while Keeble et al (1982) actually established a relationship between accessibilit y and economic activities among the countries of the E.E.C. within the country. Atuhi (1998) has in Lagos State suggested some relationship between accessibility and public facility index, while Ali (1997) suggested some relationship between accessibility and bus transport services in Enugu.For public facilities however, whose essential quality of their location is that they be as accessible to their users as possible one should expect to find a strong relationship between the two.Policy ImplicationsThe strategy of constructing new links to improve accessibility whitethorn involve heavier financial investment. Thus, a proper cost-benefit analysis is needed to regularise the desirability of such investment.Still another strategy would he to provide those services which centres lack based on extensive surveys of what are available and what are needed. This centre based approach might prove more useful if the people are guided to choose out of their preference. resultIt is pertinent t o note that the social benefit of constructing a road that increases accessibility saves time and reduces cost goes beyond the financial evaluation. This is because it touches on human value.ReferencesAbumere. SI, (1982) The nodal structure of Bendel State Nigeria Geographical Journal, vol. 25. Pp. 173-I 87.Ali, A.N. (1907) The Accessibility of major centres to the contain functions in Enugu State, Nigeria. Unpublished M.Sc. Thesis, University of Nigeria. Nsukka.Atubi, A. 0. (1998) The Accessibility of Centres to the Road Network in Lagos Island Local Government Area Lagos State, Nigeria. Unpublished M.Sc. Thesis, University of Nigeria. Nsukka.Bardi, E.C. (1982) Development of road network and Accessibility of urban centres within bendel State Nigeria 1967-1981 A Graph theory approach, Unpublished B.Sc. skipper Essay, Department of Geography, University of Nigeria. Nsukka.Brain, T. and Rodney. T. (1995) Rural Transport problems, policies and plans. Transport Systems, Policy and prep A Geographical Approach. Longman House, Burnt Mill. Hariow England, Pp. 231-260.Bruinsma. F.R. and Rietveld. P. (1994) Borders as harriers in the European road Network. A case study of the accessibility of urban agglomerations in Nijkamp P. (Ed) New Borders and Old Barriers in spatial Development, Pp. 139-52. Aveburv, Aldershot.Chapman. K. (1 979 People, Patien, and process an introduction to human Geography. Edward Arnold. London.Daly, MT. (1975) Measuring accessibility in a rural context. In white, P.R. (ed). Rural Transport Seminar, Transport Studies Group, Polytechnic of Central London, LondonHoyle. B.S. and Knowles, R.D. (1992) Rural Areas The Accessibility problem in modern Transport Geography. Longman House, Burnt in ill, Harlow England, Pp. 125-137.Ingram, D.R. (1971) The concept of accessibility a Search for operational firm. Regional Studies, Vol. 5, Pp. 101-107Jansen, H.O. (1978) The interaction between public superman and other social activities A System approach T ransportation Research, Vol. 12 (2), Pp. 83- 89Keeble, D. Owen. P.C. and Thomas. C. (1982) Regional Accessibility and Economic potential in the European Community Regional Studies, Vol. 10 (c). Pp. 4 9-432.Lachene. R. (1965) Networks and the locations of economic activities. Regional acquaintance Association papers. Vol. XIV (24), Pp. 183-196.Lineberry, R. (1977) Equality and Urban Policy, Saga. Beverley HillsMclafferty. S. and Gosh. A. (1982) Issues in measuring differential access to public Services. Urban Studies. Vol. 19, Pp. 383-389Mitchell, C.C.B. and Town, SW. (1976) Accessibility of various social groups to different activities Transport and Road Research Laboratory, Crowthorness Berkshire.Mladenka, K. (1978) Organization rules, service equality and distributional decision in urban polities Social Science Quarterly, Vol. 89 (1). Pp. 192-201Morril, B.L (1970) Spatial organization of Society. Duxbury Press, Belmont, California.Oherein, D.N. (1985) Accessibility to public fac ilities, a case study of postal service units in Owan Local Government Area, (Bendel State) Unpublished B.Sc. Thesis, Department of Geography, University of Nigeria, Nsukka.Okafor, A.N. (1982) Service area of public facility in IbadanOnokerhoraye, A.G. (1976) A conceptual simulation for the location of public facilities in the urban areas of developing countries The Nigerian Case. Socio-economic Planning Sciences, Vol. 10, Pp. 237-276.Onokala, P.C. (1995) The effect of landuse on road traffic accidents in Benin City, Nigeria. Journal of Transport Studies Vol. 1, none Pp. 34-44.Oyelegbin, R. (1996) Jams keep Lagos motorists on the road for hours. The Guardian, February 15, P. 9.Rich, R. (1979) Neglected issues in the study of urban services distribution A research agenda Urban studies. Vol. 16, Pp. 121-136.Soyade, A. and Oyejide, T.A. (1975) Branch network and economic performance A case study of Nigerias commercial banks. Nigerian Journal of Economic and Social studies, Vol. 17, N o. 2, Pp. 119-131.