Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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    CAMP: Congestion adaptive multipath routing protocol for VANETs
    (2012) Raviteja, B.L.; Annappa, B.; Tahiliani, M.P.
    Long congestion periods, frequent link failures and hand-offs in VANETs lead to more number of packets being dropped and incur high end to end delay, there by degrading the overall performance of the network. Congestion control mechanism, though mainly incorporated in transport protocols, if coupled with the routing protocols, can significantly improve overall performance of the network. In this paper we propose Congestion Adaptive Multipath Routing Protocol (CAMP) that aims to avoid congestion by proactively sending congestion notification to the sender. The proposed CAMP routing protocol is implemented in Network Simulator-2 (NS-2) and its performance is compared with Ad-hoc On Demand Multipath Distance Vector (AOMDV) in terms of Packet Drop due to Congestion, Packet Delivery Fraction, Throughput and Average End-to-End Delay. Simulation results show that CAMP routing protocol achieves significant performance gain as compared to that of AOMDV. © 2012 Springer-Verlag.
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    A Detailed Case Study Report on a Section of Four-Lane National Highway Project of Bengaluru-Mangaluru
    (Springer Science and Business Media Deutschland GmbH, 2024) Srinivas, M.; Sinha, C.; Akshay, K.; Marella, D.
    A comprehensive study of the project titled “Four-laning of Bengaluru-Mangaluru from km 270 + 270 (Periya Shanthi) to km 318 + 755 (Bantwal)†was conducted to assess the project’s potential, necessities, and requirements. The evaluation also addressed the challenges encountered due to the project’s location in a mountainous terrain region. The major issue encountered and understood through this study was that the project is delayed more than usual due to many difficulties and challenges encountered by them under various circumstances. Based on the survey and research work done, it was understood that the region of Dakshina Kannada where the project is being done has high temperature during summers due to which ice cubes were used to maintain temperature for concrete batching. The objective of the project is to eliminate the hairpin bends which slowed down the traffic movement by straightening them to reduce congestion as there are many pilgrimage places, business hubs, and tourist places in the project vicinity. Some of the main reasons for the delay of the project was unseasonal rainfall, felling of trees, obstructing the Right of Way (ROW), the inability to move the utility units to the project site due to insufficient ROW, landslides, and many more reasons. Currently, the Extension of time (EOT) has been requested by the Contractor to NHAI, as the project has been delayed. This research paper further explores the detailed causes and gives a complete insight into the project. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
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    Dynamic Traffic Assignment Using a Multi-class Continuum Model for Disordered Traffic
    (Springer Science and Business Media Deutschland GmbH, 2025) Nair, P.; Sreekumar, M.
    The traffic conditions in urban area consist of different vehicle types, which results in varying traffic dynamics for each vehicle class. The smaller vehicles can overtake larger vehicles and also move through the gaps between larger vehicles to traverse faster. The distinct dynamics of smaller and larger vehicles is a challenge to the traditional traffic assignment models which lack class-specific behavior. The routing of vehicles based on the travel time should capture these class-specific features to have a holistic view regarding typical urban traffic conditions. Traditional traffic assignment methods fail to reproduce conditions such as congestion, queue spill back, and bottleneck regions, thereby resulting in underestimation of real traffic scenarios. This study proposes a multi-class dynamic traffic assignment framework for disordered traffic to overcome the limitations of traditional traffic assignment. The framework is tested for different traffic conditions to deduce the class-specific behavior in multi-class traffic conditions. The results from the dynamic traffic assignment are compared to the traditional traffic assignment to account for the difference in travel time computations. The travel time plots obtained using dynamic traffic assignment shows that the vehicles can overcome low to mild levels of congestion by exhibiting overtaking and creeping behavior. This stands close to real traffic conditions where there is no much change in travel time unless heavy congestion. Thus, study justifies the necessity of class-specific features in travel time computation. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.