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From page 37... ... 37 C H A P T E R 4 Introduction The research team completed several activities to develop the updated bus operator work station design guidelines. First, the team reviewed current transit bus industry guidelines related to bus operator workstation design from both the United States and international organizations. Read the entire page →
From page 38... ... 38 Bus Operator Workstation Design for Improving Occupational Health and Safety The research team compiled comparative specifications from these publicly available sources to illustrate similarities and differences in a single International Bus Operator Workstation Design Matrix, which has been appended to Design Tool 1: Bus Operator Workstation Feature Guideline (available online) Read the entire page →
From page 39... ... Development of Bus Operator Workstation Design Guidelines 39 of TCRP Report 25 also decided not to pursue adjustable pedals because of concerns about safety and reliability. Without adjustable floors or adjustable pedals, assumptions based on a fixed NSRP and optimized visibility might not be valid for operators of various sizes. Read the entire page →
From page 40... ... 40 Bus Operator Workstation Design for Improving Occupational Health and Safety Update to the HRP Approach To incorporate information and suggestions based on bus operators' foot and heel position, the TCRP Project C22 research team elected to update the bus operator workstation guidelines using the HRP approach. This approach provides the best strategy for designing a transit bus operator workstation that meets the needs of operators while minimizing deviation from transit bus models available on the road today. Read the entire page →
From page 41... ... Development of Bus Operator Workstation Design Guidelines 41 determine boundary and position guidance equations that could predict how large numbers of drivers prefer vehicle workstations to be arranged. Ongoing progress is being made among commercial vehicle manufacturers and SAE com mittees to update the RPs that form the paradigm upon which many, if not most, light and commercial vehicles have been developed for decades. Read the entire page →
From page 42... ... 42 Bus Operator Workstation Design for Improving Occupational Health and Safety small companies who plan, design, construct, finance, supply, and operate bus and rail services worldwide. APTA members also include government agencies, metropolitan planning organi zations, state departments of transportation (DOTs) Read the entire page →
From page 43... ... Development of Bus Operator Workstation Design Guidelines 43 • Part 3: Information Devices and Controls. Part 3 provides requirements for the location of information devices and controls. Read the entire page →
From page 44... ... 44 Bus Operator Workstation Design for Improving Occupational Health and Safety from potentially incorporating suggestions for relevant design changes into the next update of the APTA document to creating an appendix to the APTA guidelines or simply referencing the TCRP research, as appropriate. • One participant also mentioned that the research results could provide a useful resource for transit agencies that are putting together an RFP (transit organization interview August 2014) Read the entire page →
From page 45... ... Development of Bus Operator Workstation Design Guidelines 45 are included with the Engineering CAD Model to provide application context for the related packaging recommendations. Transit Agency Site Visits The research team worked with two regional transit agencies to conduct site visits. Read the entire page →
From page 46... ... 46 Bus Operator Workstation Design for Improving Occupational Health and Safety Updated Bus Operator Workstation Design Guideline Tools Operating a transit bus requires moderate levels of muscle activity, as well as alertness to maintain awareness of common objects in the surrounding transit bus environment, such as pedestrians, vehicles, and static obstructions. Effective posture for control and direct visibility are two key assumptions that must be upheld in any transit bus operator workstation guideline in order to deliver safe, efficient, and comfortable operation of the vehicle. Read the entire page →
From page 47... ... Development of Bus Operator Workstation Design Guidelines 47 Bus Operator Workstation Design Tools The following bus operator workstation design tools provide component, feature, and vehicle level guidance for the development or procurement of bus operator workstations within transit buses. These tools can be accessed online from the TCRP Report 185 webpage. Read the entire page →
From page 48... ... 48 Bus Operator Workstation Design for Improving Occupational Health and Safety the CAD data were filled by reverse engineering components from physical measurements of transit buses. The research team visited two transit bus operation centers in southwest Virginia to photo graph various model types and years and to capture localized component measures (e.g., ped als, steering wheels, and fare boxes) Read the entire page →
From page 49... ... Development of Bus Operator Workstation Design Guidelines 49 • Minimum Seat H-Point Height Considerations: – Hpoint accuracy range: ± 25 mm; – Accounts for anthropometry measurement standard deviations, shoe height variability, knee flexion angle preference, and hpoint estimate; and – 5th percentile female hpoint range: 370 to 420 mm. The selected seat hpoint height played a significant role in defining the rest of the operator workstation in the Engineering CAD Model. Read the entire page →
From page 50... ... 50 Bus Operator Workstation Design for Improving Occupational Health and Safety the model) also were developed. Read the entire page →
From page 51... ... Development of Bus Operator Workstation Design Guidelines 51 operator packaging results from the application of the SAE Class B packaging, the International Bus Operator Workstation Design Matrix, and simulated human modeling validation. A num ber of features were combined for components in direct contact with the bus operators. Read the entire page →
From page 52... ... 52 Bus Operator Workstation Design for Improving Occupational Health and Safety – Operator platform – Seat floor – Accelerator pedal position\type – Steering wheel column pivot point – Center instrument gauge panel – Seat manufacturer's hpoint (fixed relative to seat cushions) 7 Seat selected by manufacturer and contract agency – Vehicle fiducial points: 7 Workstation reference system (WRS) Read the entire page →
From page 53... ... Development of Bus Operator Workstation Design Guidelines 53 – Japan Automobile Manufacturers Association (JAMA) , Japanese Industrial Standard (JIS) Read the entire page →
From page 54... ... 54 Bus Operator Workstation Design for Improving Occupational Health and Safety be accessed from the TCRP Report 185 webpage by going to www.trb.org and searching for "TCRP Report 185". Multiple features of the 3D PDF model make it accessible to nontraditional CAD users or users who are not familiar with vehicle packaging models. Read the entire page →
From page 55... ... Development of Bus Operator Workstation Design Guidelines 55 and physical benchmarking data demonstrated a need for greater integration of supplier and manufacturing data. In order to specify the appropriate position and range of positions for bus operators, the research team suggests that SAE packaging dimensions (SAE J1100) Read the entire page →

From page 37...

... 37 C H A P T E R 4 Introduction The research team completed several activities to develop the updated bus operator work station design guidelines. First, the team reviewed current transit bus industry guidelines related to bus operator workstation design from both the United States and international organizations.