A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon

Vehicle equivalency factors are used to account for the prevailing conditions of mixed traffic in the highway into that of ideal capacity. In particular, the presence of heavy vehicles and other low performance vehicles greatly affects the operations of the roadway and its capacity. This heavy vehic...

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Main Author: Acacio, Alan Anthony Lorenzo
Format: text
Language:English
Published: Animo Repository 2005
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Online Access:https://animorepository.dlsu.edu.ph/etd_masteral/3278
https://animorepository.dlsu.edu.ph/context/etd_masteral/article/10116/viewcontent/CDTG003882_P.pdf
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Institution: De La Salle University
Language: English
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spelling oai:animorepository.dlsu.edu.ph:etd_masteral-101162022-03-17T03:17:24Z A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon Acacio, Alan Anthony Lorenzo Vehicle equivalency factors are used to account for the prevailing conditions of mixed traffic in the highway into that of ideal capacity. In particular, the presence of heavy vehicles and other low performance vehicles greatly affects the operations of the roadway and its capacity. This heavy vehicle equivalent factor appears as fHV in the U.S. Highway Capacity Manual (USHCM) and uses the passenger-car equivalents (PCEs) to individually establish the impact of trucks ET, buses EB and recreational vehicles ERV on traffic operations. In Philippine conditions, other types of vehicles present in the local traffic stream specifically jeepneys, mini buses, tricycles, and indigenous transport modes like kuliglig which were assumed to affect traffic capacities and operations along rural highways due to their low performance operations were analyzed. Methods for determining PCEs were reviewed and driver-determined equivalence (headway method) for expressway and multiple linear regressions model for two-lane, two-way highways were applied. The average PCE values are estimated to be 1.04 for small/medium sized vehicles and 1.60 for large sized vehicles. PCE of passenger-jeepneys are observed to be similar to passenger-cars in the expressway. Light Vehicle Equivalents (LVEs) were used instead of Passenger Car Equivalents (PCEs) in moderate to steep grade terrain in Marcos highway. The LVE estimates for heavy truck vehicles and bus vehicles are 11.6 and 8.8 respectively. PCE for bus vehicle and heavy truck vehicle are 1.6 and 1.2 respectively for level grade terrain at Manila North Road (MNR). Percentile speed PCE resulted to unstable and insignificant results due to trucks and low performance vehicles inability to operate at higher speeds. The study was able to confirm that, under local conditions, increasing the percentage of large and low performance vehicles in the traffic stream adversely affects the capacity of the highways. 2005-01-01T08:00:00Z text application/pdf https://animorepository.dlsu.edu.ph/etd_masteral/3278 https://animorepository.dlsu.edu.ph/context/etd_masteral/article/10116/viewcontent/CDTG003882_P.pdf Master's Theses English Animo Repository Traffic estimation Traffic surveys Pavements--Testing Equivalence relations (Set theory) Express highways Civil Engineering Transportation Engineering
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
language English
topic Traffic estimation
Traffic surveys
Pavements--Testing
Equivalence relations (Set theory)
Express highways
Civil Engineering
Transportation Engineering
spellingShingle Traffic estimation
Traffic surveys
Pavements--Testing
Equivalence relations (Set theory)
Express highways
Civil Engineering
Transportation Engineering
Acacio, Alan Anthony Lorenzo
A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon
description Vehicle equivalency factors are used to account for the prevailing conditions of mixed traffic in the highway into that of ideal capacity. In particular, the presence of heavy vehicles and other low performance vehicles greatly affects the operations of the roadway and its capacity. This heavy vehicle equivalent factor appears as fHV in the U.S. Highway Capacity Manual (USHCM) and uses the passenger-car equivalents (PCEs) to individually establish the impact of trucks ET, buses EB and recreational vehicles ERV on traffic operations. In Philippine conditions, other types of vehicles present in the local traffic stream specifically jeepneys, mini buses, tricycles, and indigenous transport modes like kuliglig which were assumed to affect traffic capacities and operations along rural highways due to their low performance operations were analyzed. Methods for determining PCEs were reviewed and driver-determined equivalence (headway method) for expressway and multiple linear regressions model for two-lane, two-way highways were applied. The average PCE values are estimated to be 1.04 for small/medium sized vehicles and 1.60 for large sized vehicles. PCE of passenger-jeepneys are observed to be similar to passenger-cars in the expressway. Light Vehicle Equivalents (LVEs) were used instead of Passenger Car Equivalents (PCEs) in moderate to steep grade terrain in Marcos highway. The LVE estimates for heavy truck vehicles and bus vehicles are 11.6 and 8.8 respectively. PCE for bus vehicle and heavy truck vehicle are 1.6 and 1.2 respectively for level grade terrain at Manila North Road (MNR). Percentile speed PCE resulted to unstable and insignificant results due to trucks and low performance vehicles inability to operate at higher speeds. The study was able to confirm that, under local conditions, increasing the percentage of large and low performance vehicles in the traffic stream adversely affects the capacity of the highways.
format text
author Acacio, Alan Anthony Lorenzo
author_facet Acacio, Alan Anthony Lorenzo
author_sort Acacio, Alan Anthony Lorenzo
title A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon
title_short A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon
title_full A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon
title_fullStr A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon
title_full_unstemmed A study on vehicle equivalency factor for expressway and two-lane highway in North Luzon
title_sort study on vehicle equivalency factor for expressway and two-lane highway in north luzon
publisher Animo Repository
publishDate 2005
url https://animorepository.dlsu.edu.ph/etd_masteral/3278
https://animorepository.dlsu.edu.ph/context/etd_masteral/article/10116/viewcontent/CDTG003882_P.pdf
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