article · American Journal of Traffic and Transportation Engineering
An evaluation of the Umuaku to Isuochi road in Abia State, Nigeria, examined how traffic levels, pavement health, and road user experiences interact on a critical rural corridor. Data gathered over seven days combined manual vehicle counts, visual pavement surveys, moving observer observations, and road user questionnaires. Although the route carries an average daily traffic of about 4,211 vehicles with a volume-to-capacity ratio indicating stable theoretical flow, physical inspections revealed extreme road deterioration. The calculated Pavement Condition Index was 15, categorising the pavement as failed. Feedback from drivers and commuters matched these physical findings, citing compromised safety, unpredictable travel times, rough rides, and increased vehicle maintenance expenses. This substantial gap between capacity-based indicators and real operating quality stems directly from severe surface degradation and missing drainage networks.
Transport planners often rely solely on vehicle volume models, which can falsely suggest a rural road is working well. This research demonstrates that severe physical surface failure and poor drainage disrupt transport efficiency even under light traffic. Identifying this gap helps infrastructure authorities allocate capital expenditure and maintenance budgets to the rural roads that need urgent rehabilitation.
The findings inform infrastructure maintenance planning, road engineering procurement, and asset management for transport authorities and civil engineering contractors. As an applied operational assessment, the data and methods are directly relevant to informing municipal tenders and rehabilitation programmes for rural roads, though the abstract describes an applied site assessment rather than a standalone commercial product.
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This study assesses the operational performance and determines the Level of Service (LOS) of the Umuaku–Isuochi road in Abia State, Nigeria, a critical rural transport corridor supporting socio-economic activities. A comprehensive methodology integrating traffic flow analysis, pavement condition evaluation, and user perception surveys was adopted. Primary data were collected over a seven-day period through manual traffic counts, the moving observer method, visual pavement inspection using the Pavement Condition Index (PCI), and structured questionnaires administered to road users. Results indicate an Average Daily Traffic (ADT) of approximately 4,211 vehicles/day, with motorcycles (40.3%) and tricycles (17.7%) dominating the traffic composition. The computed Volume-to-Capacity (V/C) ratio of 0.31 suggests a theoretical LOS B, indicating relatively stable flow conditions. However, the pavement condition assessment yielded a PCI value of 15, classifying the road as “failed.” User perception further corroborates these findings, highlighting poor ride quality, safety concerns, increased travel time variability, and elevated vehicle operating costs. The study reveals a significant disparity between traffic-based performance indicators and actual service conditions due to severe pavement deterioration and inadequate drainage systems. It concludes that despite moderate traffic demand, the road performs poorly in delivering efficient and safe transportation services. The study recommends immediate full-scale rehabilitation, improved drainage infrastructure, and the implementation of routine maintenance strategies to restore functionality and enhance overall road performance.
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DOI: 10.11648/j.ajtte.20261103.12
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