Results 81 to 90 of about 118,691,665 (153)

The electric autonomous dial-a-ride problem

open access: yes, 2020
This thesis develops mathematical programming frameworks to operate electric autonomous vehicles in the context of ride-sharing services. The introduced problem is a novel variant of the Dial-a-Ride Problem (DARP), denoted by the electric Autonomous Dial-a-Ride Problem (e-ADARP), and includes battery management and autonomous aspects along with classic
openaire   +1 more source

Dial-a-ride charges

open access: yes, 1998
"November 17, 1998."; Discusses whether it is a common practice for towns to require senior citizens to pay a fee for dial-a-ride ...
Niesz, Helga,
core  

Electric integrated demand-responsive transport services with capacitated charging stations, multiple depots, and customer rejections

open access: yesMultimodal Transportation
This study addresses the integrated dial-a-ride problem using a fleet of electric vehicles. We propose a mixed-integer-linear programming modelling approach considering multiple depots, customer rejection, partial recharge policy and capacitated charging
Yumeng Fang, Tai-Yu Ma, Francesco Viti
doaj   +1 more source

Autonomous dial-a-ride transit : benefit-cost evaluation [PDF]

open access: yes
Among public transit and for-hire modes, fixed-route bus and rail are most effective in maintaining high ridership in high density areas such as urban centers.
Lau, Samuel W.   +1 more
core  

Enhancing Service Quality of On-Demand Transportation Systems Using a Hybrid Approach with Customized Heuristics

open access: yesSmart Cities
As customers’ expectations continue to rise, advanced on-demand transport services face the challenge of meeting new requirements. This study addresses a specific transportation issue belonging to dial-a-ride problems, including constraints aimed at ...
Sonia Nasri   +2 more
doaj   +1 more source

The Line-Based Dial-a-Ride Problem

open access: yes
20 pages, 5 figures, to be published in OASIcs, Volume 123, ATMOS ...
Kendra Reiter   +2 more
openaire   +5 more sources

Learning to Dial-a-Ride: A Deep Graph Reinforcement Learning Approach to the Electric Dial-a-Ride Problem

open access: yesCoRR
Urban mobility systems are transitioning toward electric, on-demand services, creating operational challenges for fleet management under energy and service-quality constraints. The Electric Dial-a-Ride Problem (E-DARP) extends the classical dial-a-ride problem by incorporating limited battery capacity and nonlinear charging dynamics, increasing ...
Sten Elling Tingstad Jacobsen   +3 more
openaire   +3 more sources

Municipal dial-a-ride grant legislation

open access: yes, 2002
Electronic data.; Title from title screen.; "October 22, 2002."; Summarizes provisions in 1999 legislation that required the state to make grants to municipalities for Dial-a-Ride programs.; Harvested from the web on 9/28 ...
Niesz, Helga.
core   +1 more source

Dial a ride from k-Forest

open access: yes, 2007
The k-forest problem is a common generalization of both the k-MST and the dense-k-subgraph problems. Formally, given a metric space on n vertices V, with m demand pairs ⊆ V × V and a “target ” k ≤ m, the goal is to find a minimum cost subgraph that ...
R. Ravi   +3 more
core  

Online multi-server dial-a-ride problems [PDF]

open access: yes, 2006
. In an online dial-a-ride problem, a crew of servers has to process transportation requests as they arrive in real time. Possible ob-jective functions include minimizing the makespan and minimizing the sum of completion times.
Bonifaci, V.   +8 more
core  

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