Cover Image

Not for Sale

View/Hide Left Panel
Click for next page ( 55

The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement

Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.

OCR for page 54
55 transit managers frequently ask. The information that was many sub-branches with respect to the specific design pa- gathered during this study provides some insights with re- rameters of the vehicle with respect to propulsion, fuel, doors, spect to current practices and has been used to develop a table seating type and arrangements, passenger amenities (trays, of pros and cons that provides an overview of current choices vents, lights, electrical power, wireless access, etc.), climate and applications (Table 47). control system, wheelchair accommodations and accommo- dations for other passengers with disabilities, and a multitude of other decisions. VEHICLE DESIGN ISSUES The previous section discussed the rationale for the selec- At the time of the preparation of this report (March 2007), tion of HC buses based on service attributes, along with the transit agencies that wished to deploy HC buses faced a de- advantages and disadvantages for each type. The information cision tree with three main branches: articulated bus, double- received from the transit agencies also helps to highlight deck bus, or 45-ft intercity coach. Each of these branches has vehicle design choices, and these are presented in Table 48. TABLE 48 HC VEHICLE DESIGN ISSUES HC Type Vehicle Design Issue Choices to be Made Articulated Passenger accommodations in Placing seats in the joint will increase the number articulated joint of seats in bus. Using hip rests in the joints will increase capacity of bus. Factors to consider-- length of trip and mobility of passengers. Door number and side More and wider doors can facilitate shorter dwell times. Additional doors will reduce the number of seats. Choosing to have doors on both sides will reduce seats but enable use of center street stations. The ability to shorten dwell time will depend on the fare collection practice used. A proof of payment approach will allow the use of all doors for boarding/exiting and result in the shortest dwell times. Advanced features and styling Streamlined styling for BRT services. The bullet nose improves operator mirror vision by reducing blind spots. Increases the length of bus. Improves marketing image. Propulsion/fuel Geographic location may dictate low emissions alternative fuel. Alternative fuel increases vehicle curb weight and may limit capacity. Hybrid technology improves performance and fuel economy. Also, capital cost is increased. Double-Deck Propulsion Hybrid technology requires a 2 ft longer vehicle. Weight increases 650 lb. Loss of 3 seats and an increase of 5 standees. Addition of second stairway Improves passenger circulation between decks and shortens dwell time. Loss of 4 seats plus one flip- up seat in wheelchair position. All Strobes on sides Light-emitting diode strobe lights flash when turn signal is activated and warn motorist and pedestrians of intention of bus maneuver.