Furthermore, we investigated the energy consumption of trucks and drones. According to the numerical results, we observe that the use of drone stations leads to considerable savings in delivery time compared to traditional mTSP solutions. To verify the performance of our algorithms, we conducted extensive computational experiments. Afterwards, we suggest a third approach that is based on populating a solution pool with several restarts of an iterated local search metaheuristic, which is followed by determining the best combination of tours using a set-partitioning model. To address larger instances, we first introduce two variants of a decomposition-based matheuristic. We formulate the mTSP-DS as a mixed integer linear programming (MILP) model to solve small instances. The goal is to serve all customers either by truck or by drones/robots while minimizing the makespan. The trucks start their mission from the depot and can supply some packet stations, which can then launch and operate drones/robots to serve customers. In the mTSP-DS, we have a depot, a set of trucks, and some packet stations that host a given number of autonomous vehicles (drones or robots).
In this paper, we introduce the multiple Traveling Salesman Problem with Drone Stations (mTSP-DS), which is an extension to the classical multiple Traveling Salesman Problem (mTSP). © 2020, World Academy of Research in Science and Engineering. Relatively, tests show that input distances lower than 0 or greater than 12 kilometers results in an error message. A Matlab program is made that computes for the delivery time of the drone given an input between 0 to 12 kilometers. The estimation is made considering the average speed of the drone and the input distance from headquarters to the delivery location. The approximated travel time of the drones is calculated assuming perfect weather conditions, no wind turbulence, and no object collision. Drone delivery is performed such that drones would transfer parcels from headquarters to the assigned delivery location within a maximum distance of 12 kilometers. To compensate for this, an alternative form of courier service via unmanned aerial vehicles (UAVs) or specific drones is proposed. Due to the increasing number of people using automobiles on the road every year, traffic congestion becomes more prevalent in both rural and urban areas, especially during rush hours. Take Rt 66 to the exit at Rt 28.Considering the weight of the traffic in the Philippines, the delivery of products via land vehicles has long since been an inconvenience to consumers due to extensive delivery times. Turn right into the Herndon Middle School parking lot, 901 Locust St, and enjoy the bus ride to the siteĭriving from the West to the Shuttle bus parking lot Take the Toll Rd West to the Centreville Rd(Rte 228)/Elden Street (exit 10)įollow Elden St to the fourth traffic signal at the intersection with Locust St/ Sterling Rd (Rte 606) and turn right Take Route 495 to the Dulles Toll Rd 267W and points east to the Shuttle bus parking lot Please watch for any posted street signs and warnings, and secure your valuables, as the Herndon WinterMarkt, its hosts and sponsors, and any affiliates are not responsible for violations or damage. Please respect our neighbors and do not block private drives or otherwise disrupt the flow of traffic. Please do not park in private parking lots such as the Pines Shopping Center. The event is just steps from the W&OD trail enjoy a bike ride or walk to the WinterMarkt. Best pick up is at 779 Center Street, Herndon, VA 20170 near the Moose Lodge. Limited parking is available in the Station Street Municipal lot, accessible from Center and Vine Streets or from Station Street behind Sully’s Pour House.Ĭhoose to use a car service like Uber or Lyft. Drop off and pick up will be at the corner of Lynn and Center Streets. Park your car and meet the bus in front of the school in the circular drive.
Center street drone station free#
Anyone planning to attend the WinterMarkt is encouraged to take advantage of free parking and shuttle bus service departing every ten-twelve minutes from Herndon Middle School, 901 Locust Street.
Parking in the downtown area near the event site will be limited.
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