Length (see and no more than 521 mm 390 500 mm adjustable – Note 3) at its maximum length. (recommended) 432 533 mm across the – Seat Pan front edge of the seat mm (required) ≥450 Cushion N/A mm (required) Yes ≥480 cushion; 508 584 mm mm (recommended) – ≥480 Width across the side bolsters. Shall adjust in height from Seat Pan a minimum of 356 mm, Cushion N/A with a minimum 152 mm N/A N/A Yes Height (see vertical range of Note 4) adjustment. Seat Back N/A No less than 483 mm mm (required) mm (required) Yes ≥475 ≥475 Width provide lumbar back support Seat Back Air with three individual Lumbar actuated N/A N/A Yes operating lumbar cells Support lumbar within a minimum range of 178 to 279 mm. While seated, the bus operator shall be able to make seat adjustments by Shall be capable of hand without complexity, Shall be capable of manual manual adjustment – Seat Control excessive effort, or being adjustment without the use of – N/A without the use of tools Yes Locations pinched. Adjustment tools from the bus operator`s – from the bus – mechanisms shall hold the seat position. operator`s seat position. adjustments and shall not be subject to inadvertent changes. Head Restraint N/A N/A mm (required) mm (required) Yes ≥840 ≥840 height above seat pan
Length (see Note 3) and no more than 521 mm at its maximum length. 390 – 500 mm adjustable (recommended) Seat Pan Cushion Width N/A 432 – 533 mm across the front edge of the seat cushion; 508 – 584 mm across the side bolsters. ≥480 mm (required) ≥450 mm (required) ≥480 mm (recommended) Yes Seat Pan Cushion Height (see Note 4) N/A Shall adjust in height from a minimum of 356 mm, with a minimum 152 mm vertical range of adjustment. N/A N/A Yes Seat Back Width N/A No less than 483 mm ≥475 mm (required) ≥475 mm (required) Yes Seat Back Lumbar Support Air actuated lumbar provide lumbar back support with three individual operating lumbar cells within a minimum range of 178 to 279 mm. N/A N/A Yes Seat Control Locations N/A While seated, the bus operator 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. Shall be capable of manual adjustment – without the use of tools – from the bus operator`s seat position. Shall be capable of manual adjustment – without the use of tools – from the bus operator`s seat position. Yes Head Restraint height above seat pan N/A N/A ≥840 mm (required) ≥840 mm (required) Yes
tcrp_rpt_185_DesignTool1.docx