Browsing by Author "Snyman, Jacobus Petrus"
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- ItemEstablishing and applying road classification and access management techniques on Bird street in Stellenbosch, South Africa(Stellenbosch : Stellenbosch University, 2020-03) Snyman, Jacobus Petrus; Bruwer, Megan; Stellenbosch University. Faculty of Engineering. Dept. of Civil Engineering.ENGLISH ABSTRACT: Bird Street is one of the roads in Stellenbosch with the slowest movement of traffic and the highest level of congestion during peak hour periods (06:00 to 09:00 and 16:00 to 19:00). The optimum functioning of the transport network cannot be achieved, due to outdated transport systems and changes that have occurred over the past few decades. The purpose of this study is to investigate the traffic operation along the road, with the intention of establishing whether there is a discrepancy between the actual and intended road classification and access management of Bird Street, and to determine the impact of this potential discrepancy on traffic parameters. Vehicle movement and traffic volume data were analysed for further use in other components of the study. From the analysed data, Bird Street was classified according to the functional classification system techniques. These techniques were used to classify Bird Street under two conditions, namely the current designed condition and the current operating condition. Thereafter, different scenarios were developed based on the classification of the two conditions and by representing different techniques identified for each of them within the context of the literature. A microscopic traffic modelling software package from PTV Group was used to construct a traffic model (static) for the simulation of different scenarios and to obtain results for further analysis. From the results, the impact of jaywalking activities within the network, current signal plans vs optimised signal plans, functional classification and functional classification vs without jaywalking were determined. Ultimately, the economic impact and the change in emissions for the best-case scenario category were compared to the base scenario. From the results, it was concluded that jaywalking activities and the optimisation of the current implemented signal plans had a minor impact on the current traffic conditions. It was also concluded that by redesigning outdated road networks within a realistic context and according to the standards identified by the literature, the same outcome can be achieved as within a utopian context. For the realistic design condition, an average percentage speed and volume increase of 66% and 100%, respectively, was determined. The total cost saving was determined as R11 951 548.76 per year and the improved design proved to be more environmentally friendly by reducing the carbon footprint. Overall, it was concluded that the main cause of the current traffic conditions along Bird Street was the outdated functional classification and access management thereof.