UISpace
Welcome to UISpace, The University of Ibadan Institutional Repository. A collection of theses, articles, books, videos, images, lectures, papers, data sets and all types of digital content originating from the University of Ibadan Nigeria. This repository is managed by the Kenneth Dike Library University of Ibadan, Nigeria.
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Safety performance of selected bus stops in Ibadan Metropolis, Nigeria
(Department of Civil Engineering, University of Ibadan, Ibadan, Oyo State, Nigeria, 2022) Akintayo, F. O.; Sonichukwu, A. A.
Bus systems cannot be fully explored if issues such as safety of bus passengers on-board or at bus stops are not addressed. This study was aimed at assessing the safety of bus stops in Ibadan metropolis. Twenty bus stops were purposefully selected for this study from the five urban local government areas in Ibadan metropolis. A field survey involving interviews with 50 passengers and direct observations of hazardous acts was carried out at the bus stops. Casual factors of hazardous acts were noted as well. A score survey was conducted with 17 experts (civil engineers and transportation engineering researchers) where they were asked to rate how much each casual factor contributes to its corresponding hazardous act using a scale of 1–4 (1 being ‘not important at all’ and 4 being ‘very important’). Experts were also asked to make pairwise comparisons among hazardous acts and consistent responses were analyzed using Analytic Hierarchy process (AHP). Results from the score survey and AHP were used to model the safety levels of the selected bus stops. With safety levels ranging from 2.38 to 4.83 (10 being the best and 0 being the worst), all bus stops fell short of an acceptable level of safety. Also, Interviews conducted revealed passengers’ dissatisfaction with their user-experience. Recommendations were therefore made based on the findings.
Traffic flow rate on Kigali roads: a case of national roads (RN1 and RN3)
(Department of Civil Engineering, University of Ibadan, Ibadan, Nigeria, 0201-06) Nyirajana, J.; Akintayo, F. O.; |Coker, A. O.
Traffic flow study plays a key important in various functionalities of cities all over the world. The study of traffic flow is also viewed as an essential facility of the country when it wants to establish traffic operations patterns in the progress of road planning. Blockages are accountable for a sequence of harmful effects such as loss of time, scheduling difficulties, carbon dioxide production, and risks of accidents as well as external expense. Besides, inadequate transportation facilities and increased traffic volume hamper urban development, especially in developing nations. The objective of the study was to assess the traffic flow state in two selected national roads of Kigali city. The traffic data were collected from 5 am to 8 pm on two National Roads (RN1 and RN3). The relationship between density and flow rate was analyzed using the fundamental diagram of traffic flow. It was found that the peak hours were from 6 am to 8 am and 5 pm to 8 pm. The highest number of vehicles counted were motorcycles due to shortcuts taken to reduce travel time. The results on RN3 revealed a proportion increase of traffic flow and density in the free-flow regime from 0 to maximum flow of 3346.6 veh/h correspondent to a critical density of 229.9 veh/km. However, in the congested zone regime, there was a decrease in traffic flow and an increase in density. It was found that the curve of flow versus density tended to increase on-road RN1. This study proposed the promotion of public transport and e-commerce as strategies to mitigate the congestion. Also, further research may be carried out on all roads of Kigali city, to provide the level of congestion useful for traffic deviation accordingly.
An Ethno-Statistical Analysis of Direct and Indirect Acts in Catchy HIV/AIDS Campaign Messages in Benin Metropolis
(International Journal of Humanities and Cultural Studies, 2015) Solomon-Etefia, P. O.; Nweya, G. O.
Catchy HIV/AIDS campaign messages in Benin metropolis exhibit the characteristics of direct and indirect acts. These acts play pragmatic roles in peoples’ understanding of catchy HIV/AIDS campaign messages in Benin metropolis. This paper investigates direct and indirect acts in HIV/AIDS catchy campaign messages in Benin metropolis from an ethno-statistical perspective; it assess respondents’ understanding of the campaign messages with the features of directness and indirectness. The data for the study were collected using the questionnaires from five LGAs in Benin metropolis. These are Oredo, Ikpoba-Okha, Ovia-North-East and Ovia-South-West and the data was analysed using the simple percentages. The paper reveals that some respondents could not understand some of the messages because of the pragmatic indirectness. It was also observed that background characteristics (age, education, gender, and ethnic group), understandable language for reading and writing of respondents and how HIV/AIDS messages were known play a major role in understanding the direct and indirect acts in the messages. The paper concludes by advising the message provider to write in simpler form for the effectiveness of these campaign messages, creating of messages in native languages is also encouraged.
Assessment of the impacts of building construction activities on the environment
(Department of civil engineering, University of Ibadan, Ibadan, Oyo-state, Nigeria ,department of chemistry, University of Zululand, zululand, kwazulu-Natal, South- Africa. Department of earth sciences, Olabisi Onabaanjo University, Ago-Iwoye, Ogun State, Nigeria. department of applied chemistry, University of Johannesburg, Johannesburg, South Africa. department of civil engineering, Osun State University, Osogbo, Osun state, Nigeria., 2024-04) Akintayo, F. O.; Oyebade, O. N.; Songca, S. P.; Adebisi, N. O.; Oluwafemi, O.S.; Fadipe, O. O.
Activities in building construction industry contribute to air pollution. In this study, gas data from four locations at each three building construction sites in Doha, Qatar were collected and analyzed. Questionnaires were also administered to companies that are involved in building construction projects. The results showed traces of SO2, CO2, CO and NO2 but in amounts below the detrimental limit stipulated by the Ministry of Environment, Qatar. Questionnaire responses revealed that the extraction of raw materials and the energy consumed during construction occur quite often, but strongly implicated dust generated from construction sites and waste disposal, as major factors causing air pollution in the area. It is therefore, recommended that regular monitoring of air should be carried out within building construction sites to aid detection of air contamination. This will serve as a control measure to stimulate catalytic conversion of exhaust, reuse and recycling of waste materials.
Analysis and Design of Intersection for Improved Traffic flow at Awolowo Junction, Bodija Ibadan, Nigeria
(Department of Civil Engineering, University of Ibadan, Ibadan, Nigeria, 2019-12) Adigun, T.; Okunlola, O.; Akintayo, F. O.
Traffic Congestion is inevitable for residents of economically dynamic cites therefore city authorities have to devise means of managing congestion to ease commuters of constrains imposed upon them by traffic congestion. The need for improvement of traffic flow at Awolowo Junction Bodija Ibadan is germane due to traffic congestion at this intersection. The aim of this study is to improve traffic flow at Awolowo Junction Bodija Ibadan. Traffic survey was carried out at the intersection, the peak hour factor and the design hourly volume were determined then the saturation flow rate and the cycle length (using the concept of volume-to-capacity ratio) were determined following the steps outlined in the Highway Capacity Manual, thereafter the yellow interval and the green times were computed. The peak hour was between 4:00 pm - 5:00 pm with a flow of 2989 vehicles per hour and a factor of 0.94 with design hourly volume of 539, 1464 and 1177 vehicles per hour for North, West and East approach respectively. The data collected was checked against the traffic signal warrants of the Manual on Uniform Traffic Control Device and yielded positive result with warrant 3. The saturation flow rate was computed to be 2618, 4320 and 3913 vehicles per hour for the North, West and East approach respectively with a flow ratio of 0.21, 0.34 and 0.3 for North, West and East Approach respectively. A pre-timed traffic control signal was designed to improve traffic flow at Awolowo Intersection of UI/secretariat Road.