Apta (Draft) Specification For: 30-ft, 35-ft, 40-ft, 45-ft, 60-foot (articulated) Transit Buses
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- Seat base fore/aft adjustment
- Head rests Default Adjustable head rest Alternative No head rest Seat back lumbar support
- Seat back angle adjustment
- 51.4Seat control locations
50.2Windshield washersThe windshield washer system, when used with the wipers, shall deposit washing fluid evenly and completely wet the entire wiped area. The windshield washer system shall have a minimum 3-gallon reservoir, located for easy refilling from outside of the bus. Reservoir pumps, lines and fittings shall be corrosion-resistant and must include a means to determine fluid level. IP 51.Driver’s seatDRIVER’S SEAT Figure 3 Seat base Seat pan cushion Head rest Seat back Seat back lumbar support Seat belt Arm rest 
51.1DimensionsThe driver’s seat shall be comfortable and adjustable so that people ranging in size from a 95th-percentile male to a 5th-percentile female may operate the bus. Seat pan cushion lengthMeasurement shall be from the front edge of the seat pan to the rear at its intersection with the seat back. The adjustment of the seat pan length shall be no less than 16.5 in. at its minimum length and no more than 20.5 in. at its maximum length. Seat pan cushion heightDefault Dimensions Measurement shall be from the cab floor to the top of the level seat at its center midpoint. The seat shall adjust in height from a minimum of 14 in., with a minimum 6 in. vertical range of adjustment. Alternative
The reference point for seat height shall be determined by establishing the H-point. Seat pan cushion slopeMeasurement is the slope of the plane created by connecting the two high points of the seat, one at the rear of the seat at its intersection with the seat back and the other at the front of the seat just before it waterfalls downward at the edge. The slope can be measured using an inclinometer and shall be stated in degrees of incline relative to the horizontal plane (0 degrees). The seat pan shall adjust in its slope from no less than plus 12 degrees (rearward “bucket seat” incline), to no less than minus 5 degrees (forward slope). Seat base fore/aft adjustmentMeasurement is the horizontal distance from the heel point to the front edge of the seat. The minimum and maximum distances shall be measured from the front edge of the seat when it is adjusted to its minimum seat pan depth (approximately 15 in.). On all low-floor buses, the seat-base shall travel horizontally a minimum of 9 in. It shall adjust no closer to the heel point than 6 in. On all high-floor buses, the seat base shall travel a minimum of 9 in. and adjust no closer to the heel-point than 6 in. Seat pan cushion widthMeasurement is the horizontal distance across the seat cushion. The seat pan cushion shall be 17 to 21 in. across at the front edge of the seat cushion and 20 to 23 in. across at the side bolsters. Seat suspensionThe driver’s seat shall be appropriately dampened to support a minimum weight of 380 pounds. The suspension shall be capable of dampening adjustment in both directions. Rubber snubbers shall be provided to prevent metal-to-metal contact. Seat backWidthMeasurement is the distance between the outermost points of the front of the seat back, at or near its midpoint in height. The seat back width shall be no less than 19 in. HeightDefault Standard height seat back Alternative High seat back Head restsDefault Adjustable head rest Alternative No head rest Seat back lumbar supportMeasurement is from the bottom of the seat back at its intersection with the seat pan to the top of the lumbar cushioning. The seat back shall provide adjustable depth lumbar back support in at least two locations, within a minimum range of 7 to 11 in. Seat back angle adjustmentThe seat back angle shall be measured relative to a level seat pan, where 90 degrees is the upright position and 90 degrees-plus represents the amount of recline. The seat back shall adjust in angle from a minimum of no more than 90 degrees (upright) to at least 105 degrees (reclined), with infinite adjustment in between. 51.2Seat beltThe belt assembly should be an emergency locking retractor (ELR). All seat belts should be stored in automatic retractors. The belts shall be mounted to the seat frame so that the driver may adjust the seat without resetting the seat belt. The seat and seat belt assemblies as installed in the bus shall withstand static horizontal forces as required in FMVSS 207 and 210. Default
Seat belts shall be provided across the driver’s lap and diagonally across the driver’s chest. The driver shall be able to use both belts by connecting a single buckle on the right side of the seat cushion. Lap belt lengthDefault 72 in. The lap belt shall be 72 in. In length. Alternative
The lap belt shall be 72 in. in length with a 12-in. extension 51.3Adjustable armrestDefault No armrests Alternative One armrest, right side Alternative One armrest, left side Alternative Two armrests 51.4Seat control locationsWhile seated, the driver shall be able to make seat adjustments by hand without complexity, excessive effort or being pinched. Adjustment mechanisms shall hold the adjustments and shall not be subject to inadvertent changes. Directory: swc swc -> Packet Tracer Configure Initial Router Settings (Instructor Version) Instructor Note swc -> Chapter 50 Aircraft swc -> Conservation Security Program swc -> Click on enter the exhibition swc -> Southwest Christian – Tinley Park Invitational Meet Boys Cross Country Race Friday, September 30, 2016 Cool and Cloudy – 60 Degrees swc -> Date: October 28 – December 5, 2003 Project Website swc -> Publication and presentation log swc -> Ncdmf chpp chapter Shell bottom Ecological Role and Functions Ecosystem enhancement swc -> Directions: use the map in Download 0.56 Mb. Share with your friends:
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