Doubling Personal Rapid Transit Capacity with Ridesharing

2005 ◽  
Vol 1930 (1) ◽  
pp. 107-112
Author(s):  
Robert E. Johnson
Keyword(s):  
Wait Time ◽  
Arrival Rate ◽  
Rapid Transit ◽  
Security Measures ◽  
Double Peak ◽  
Peak Period ◽  
Average Wait Time ◽  
Personal Rapid Transit ◽  
Transit Capacity ◽  
Simulation Results

A new personal rapid transit (PRT) operating policy is specified; it can often double peak period capacity with moderate wait times. When a passenger selects a destination for a vehicle, the destination is displayed for all to see. Any waiting passenger going to the same destination can also board. However, vehicles are not delayed just to gather additional riders. Fares are charged per person, rather than per vehicle. If the passenger queue length happens to equal the number of destinations and all destinations are equally likely, it is shown that on average one extra passenger will board each vehicle and that vehicle occupancy and line capacity will approximately double. The average wait time in this case will be approximately N/(2R), where N is the number of destinations and R is the vehicle arrival rate at the origin station. A station layout that facilitates this ridesharing policy is presented, and security measures are described for strangers traveling together. Simulation results give occupancy values up to 18% higher than expected from a simple model. During peak periods with directional flows, passengers facing a long wait can choose to travel to a destination near their own with no passenger queue and from there immediately board a vehicle to continue to their original destination. This makes ridesharing feasible in relatively large PRT systems.

scholarly journals Analysis On The Effect Of Express Checkouts In Retail Stores

2017 ◽  
Vol 33 (4) ◽  
pp. 765 ◽  
Author(s):  
Jin Kyung Kwak
Keyword(s):  
Queue Length ◽  
Computational Study ◽  
Wait Time ◽  
Arrival Rate ◽  
Service Operations ◽  
Time Variability ◽  
Retail Stores ◽  
Average Wait Time ◽  
Retail Service

In this study, we investigate the effect of having express checkout lanes in retail stores. Express checkout lanes are being used to reduce expected wait time of small-buying customers, but their operational effect has not been analyzed so far. By comparing the wait time and the queue length of the two scenarios (universal checkout lanes only and separated checkout lanes with express counters) via simulation, we have found that the average wait time of the separated checkout lanes may not be shorter than that of universal checkout lanes. This may be due to that the effect of pooling servers decreases as the number of servers being pooled at each checkout set decreases. The queue length of express checkout lanes may be shorter than that of universal checkout lanes, but in some cases, the average queue length of separated checkout lanes is longer than that of universal checkout lanes, probably due to the effect of pooling servers. By conducting a computational study, we have observed that the effect of pooling servers decreases with customer arrival rate, decreases with regular checkout duration, and slightly increases with regular checkout time variability. These results give us an insight on when the express checkout counters can be effective in retail service operations.

Evaluating Virtual Care Experiences for Patients with Covid-19 Chief Complaints: Best-Practices Recommendations (Preprint)

2020 ◽  
Author(s):  
Saif Khairat ◽  
Malvika Pillai ◽  
Barbara Edson ◽  
Robert Gianforcaro
Keyword(s):  
Patient Experience ◽  
Wait Time ◽  
Secondary Outcome ◽  
Major Drawback ◽  
Cross Sectional ◽  
Average Wait Time ◽  
Adherence To Medication ◽  
Virtual Care ◽  
Chief Complaints ◽  
Virtual Visits

BACKGROUND Importance: Positive patient experiences are associated with illness recovery and adherence to medication. The shift toward virtual visits creates a need to understand the opportunities and challenges in providing a patient experience that is at least as positive as in-person visits. OBJECTIVE To evaluate the virtual care experience for patients with Covid-19 as their chief complaints. METHODS We conducted a cross-sectional study of the first cohort of patients with Covid-19 concerns in a virtual clinic. We collected data on all virtual visits between March 20-29, 2020. Outcomes: The main endpoints of this study were patient diagnosis, prescriptions received, referrals, wait time and duration, and satisfaction. The secondary outcome was the reported choice of alternative care options. RESULTS Of the 358 total virtual visits, 42 patients marked “Covid-19 Concern” as their chief complaint. Of those patients, 23 (54.8%) female patients, the average age of patients was 33.9 years, and 41 (97.7%) patients were seeking care for themselves and one (3.3%) visit was for a dependent. For all virtual visits, the average wait time (SD) was 157.2 (181.7) minutes and the average wait time (SD) for Covid-19 Concern visits was 177.4 (186.5) minutes. Covid-19 Concern phone visits had an average wait time (SD) of 180.1 (187.2), compared to 63.4 (34.4) minutes for Covid-19 Concern video visits. Thirteen (65%) patients rated their provider as “Excellent” with similar proportions among phone (64.3%) and video (66.7%). CONCLUSIONS This study evaluated the virtual experiences of patients with Covid-19 concerns. There were different experiences for patients depending on their choice of communication. Long wait times were a major drawback in the patient experience. We have learned from evaluating the experience of our first cohort of Covid-19 Concern patients.

Heathrow Personal Rapid Transit System

2015 ◽  
Author(s):  
Tony Kerr ◽  
Martin Lowson ◽  
Austin Smith
Keyword(s):  
Rapid Transit ◽  
Transit System ◽  
Personal Rapid Transit

Utilization of Existing Metro Rail Viaduct for Emergency and Personal Rapid Transit

2018 ◽  
Author(s):  
Prabu Raja ◽  
Naresh Kumar
Keyword(s):  
Urban Transportation ◽  
Rapid Transit ◽  
End User ◽  
Personal Rapid Transit ◽  
Transportation Modes ◽  
Present Decade ◽  
Pros And Cons

<p>In the present decade, urban transportation need to satify the requirement of the commuter to move faster and at the same time to achieve its affordability goal to the end user. In pursuit of this exploration, infrastructure built to cater the existing transportation modes &amp; network should be utilised to provide a sustainable solution. Accordingly, it has been discussed a new ideology of utilizing the emergency walkway of the existing metro rail elevated viaduct for providing services named Emergency Rapid Transit (ERT) and Personal Rapid transit (PRT). This paper describes about the requirements, pros and cons of implementing this ideology.</p>

scholarly journals Concept of Advanced Personal Rapid Transit at Airports

2020 ◽  
Author(s):  
Kenku Mobolaji ◽  
Dávid Földes ◽  
Csaba Csiszár
Keyword(s):  
Access Time ◽  
Rapid Transit ◽  
Related Services ◽  
Transportation Demand ◽  
Personal Rapid Transit ◽  
Baggage Handling ◽  
User Expectations ◽  
Private Transportation ◽  
Airport Terminals ◽  
Parking Facilities

The increase in air transportation demand implies challenges on airport ground access. Using private transportation mode to reach the airport is a typical practice which results in the vast demand for parking facilities. These facilities are located farther from the terminal, increasing the access time. This research aimed to develop the concept of an advance airport Personal Rapid Transit (PRT) that connects parking facilities to the terminal as a shuttle service, and provides on-board integrated flight-related services, such as check-in and baggage handling. The system architecture and operational models were developed, thus all relevant components and functions were identified, especially focusing on information management tasks. A questionnaire survey was performed and conducted at Budapest Airport to reveal the user expectations towards an advanced PRT service at the airport. Moreover, a layout selection method was developed which was applied to Budapest Airport as a case study. The proposed PRT service provides a seamless transit by access to airport terminals from remote parking facilities conveniently and the time consumption of flight-related activities is significantly reduced too.

scholarly journals Demand and Schedule Operation Mode for Personal Rapid Transit

2013 ◽  
Vol 2 (3) ◽  
pp. 356-360
Author(s):  
Jong-Gyu Hwang ◽  
Baek-Hyun Kim ◽  
Seok-Won Kang ◽  
Rak Gyo Jeong
Keyword(s):  
Operation Mode ◽  
Rapid Transit ◽  
Personal Rapid Transit
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