Capturing the Impact of Speed, Grade, and Traffic on Class 8 Truck Platooning

Taylor, Alexander H.; Droege, Miles J; Shaver, Gregory M.; Sandoval, Jairo A.; Erlien, Stephen M.; Kuszmaul, James

doi:10.1109/tvt.2020.3009489

Cited by 9 publications

(9 citation statements)

References 15 publications

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“…A few extensions can be made to this study. First of all, the fuel consumption model can be further refined by considering road slopes, weather conditions, and traffic conditions, which have been revealed as explanatory variables of fuel efficiency ( 23 , 24 ). Moreover, the energy consumption during the assembly and disassembly of platoons needs to be considered: previous research has indicated that the energy consumption can largely depend on the position at which a fleet joins or leaves a platoon ( 25 ).…”

Section: Discussionmentioning

confidence: 99%

Investigating the Potential of Truck Platooning for Energy Savings: Empirical Study of the U.S. National Highway Freight Network

Sun

Abdolmaleki

et al. 2021

Transportation Research Record: Journal of the Transportation R

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Truck platooning enabled by connected automated vehicle (CAV) technology has been demonstrated to effectively reduce fuel consumption for trucks in a platoon. However, given the limited number of trucks in the traffic stream, it remains questionable how great an energy saving it may yield for a practical freight system if we only rely on ad-hoc platooning. Assuming the presence of a central platooning coordinator, this paper is offered to substantiate truck platooning benefits in fuel economy produced by exploiting platooning opportunities arising from the United States’ domestic truck demands on its highway freight network. An integer programming model is utilized to schedule trucks’ itineraries to facilitate the formation of platoons at platoonable locations to maximize energy savings. A simplification of the real freight network and an approximation algorithm are used to solve the model efficiently. By analyzing the numerical results obtained, this study quantifies the importance of scheduled platooning in improving trucks’ fuel economy. Furthermore, the allowable platoon size, schedule flexibility, and fuel efficiency all play a crucial role in energy savings. Specifically, by assuming that following vehicles in a platoon obtain a 10% energy reduction, an average energy reduction of 8.48% per truck can be achieved for the overall network if the maximum platoon size is seven, and the schedule flexibility is 30 min. The cost–benefit analysis provided at the end suggests that the energy-saving benefits can offset the investment cost in truck platooning technology.

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Section: Discussionmentioning

confidence: 99%

Investigating the Potential of Truck Platooning for Energy Savings: Empirical Study of the U.S. National Highway Freight Network

Sun

Abdolmaleki

et al. 2021

Transportation Research Record: Journal of the Transportation R

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“…The semi-trailer truck (corresponding to the Class 9/10 vehicle in the United States) plays a dominant role in road freight transportation due to its good braking and manipulation performance [ 33 ]. This type of truck is also the most commonly used vehicle in ATP tests worldwide.…”

Section: Vehicle Loads On Highway Bridgesmentioning

confidence: 99%

Load Effect of Automated Truck Platooning on Highway Bridges and Loading Strategy

Ling

Deng

et al. 2022

Sensors

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Automated truck platooning (ATP) has gained growing attention due to its advantage in reducing fuel consumption and carbon emissions. However, it poses serious challenges to highway bridges due to the load effect of multiple closely spaced heavy-duty trucks on the bridge. In China, ATP also has great application prospects in the massive and ever-increasing highway freight market. Therefore, the load effects of ATP on bridges need to be thoroughly investigated. In this study, typical Chinese highway bridges and trucks were adopted. ATP load models were designed according to the current Chinese road traffic regulations. The load effects of ATP on highway bridges were calculated using the influence line method and evaluated based on the Chinese bridge design specifications. Results show that the load effect of ATP on bridges increases with the increase in the gross vehicle mass and the truck platooning size but decreases with the increasing inter-truck spacing and the critical wheelbase. The Grade-I (best quality standard) highway bridges are generally capable of withstanding the ATP loads, while caution should be exercised for other bridges. Strategies for preventing serious adverse impacts of ATP load on highway bridges are proposed.

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“…The Operational Design Domain (ODD) denotes the operating conditions for an Automated Driving System (ADS) [25], e.g., for the road, the vehicle, digital connectivity and weather. Steady-state platooning, i.e., no gear changes and acceleration [26], can yield 5-15% fuel savings [1,2,26] on flat highways at short headways, at 80-100 km/h speeds. Savings should improve as speed increases, since drag is a function of vehicle speed squared.…”

Section: Introductionmentioning

confidence: 99%

“…Savings should improve as speed increases, since drag is a function of vehicle speed squared. Hence, platooning is less beneficial at low speeds [26]. As trucks are coasting or braking downhill, no fuel is used and no savings can occur.…”

Section: Introductionmentioning

confidence: 99%

Operational and Infrastructure Readiness for Semi-Automated Truck Platoons on Rural Roads

Log

Eitrheim

Pitera

et al. 2023

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On highways, truck platooning may reduce fuel consumption, improve road safety and streamline trucking operations. However, most roads worldwide are two-way, two-lane rural roads, i.e., conditions for which truck platooning should be tested to explore the extent of those advantages. This paper reports findings from a field study undertaken in Northern Norway, testing a platoon of three semi-automated trucks on rural roads with tunnels, mountain passes and adverse geometries. Fleet management and distance data, videos, interviews and conversations between participants were used to assess whether platooning was feasible on such roads. The platooning system was used without interventions through most road conditions, and worked well on flat and wide roads with 90 km/h speed limits. However, it struggled in sharp horizontal curves, where the following trucks would speed up before regaining connection to their preceding truck and then brake abruptly to regain the prescribed distance. Moreover, steep uphills were problematic due to inconsistent gear shifting between the trucks. Seemingly, no fuel savings were achieved, due to excessive following distances and suboptimal speed profiles on crest curves. To obtain further insights into the benefits of truck platooning on rural roads, we suggest redoing the field study with V2V-communication, allowing for shorter following distances, and also performing a manual-driven baseline first.

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Capturing the Impact of Speed, Grade, and Traffic on Class 8 Truck Platooning

Cited by 9 publications

References 15 publications

Investigating the Potential of Truck Platooning for Energy Savings: Empirical Study of the U.S. National Highway Freight Network

Investigating the Potential of Truck Platooning for Energy Savings: Empirical Study of the U.S. National Highway Freight Network

Load Effect of Automated Truck Platooning on Highway Bridges and Loading Strategy

Operational and Infrastructure Readiness for Semi-Automated Truck Platoons on Rural Roads

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