The bus operator’s view, perpendicular through operator’s side window glazing, should extend a minimum of 840 mm to the rear of the heel point on the accelerator, and in any case must accommodate a 95th Street-side Driver’s N/A percentile male operator. N/A N/A Yes Window view The view through the glazing at the front of the assembly should begin not more than 26 in. (560 mm) above the operator’s floor to ensure visibility of an under-mounted convex mirror. Shall illuminate the half of Driver’s area General the steering wheel nearest N/A N/A N/A Yes lighting Illumination the bus operator to a level of 5 to 10 foot-candles. Driver’s area General N/A N/A N/A N/A Yes lighting Illumination Driving noise at 50 The driving expressed as an km/h must not exceed (taken over two minutes) at Leq 70 dB(A) at the bus 50 km/h, shall not exceed 70 operator’s ear height dB(A) at the bus operator’s ear Driver’s area General N/A N/A (measuring method in height (measured in accordance Yes Noise accordance with DIN with ISO 5128). Noise level, ISO 5128). Noise level when the bus is stationary and at low idle must not engine is idle, shall be > 60 exceed 55 dB(A). dB(A).
Street-side Window Driver’s view N/A The bus operator’s view, perpendicular through operator’s side window glazing, should extend a minimum of 840 mm to the rear of the heel point on the accelerator, and in any case must accommodate a 95th percentile male operator. The view through the glazing at the front of the assembly should begin not more than 26 in. (560 mm) above the operator’s floor to ensure visibility of an under-mounted convex mirror. N/A N/A Yes Driver’s area lighting General Illumination N/A Shall illuminate the half of the steering wheel nearest the bus operator to a level of 5 to 10 foot-candles. N/A N/A Yes Driver’s area lighting General Illumination N/A N/A N/A N/A Yes Driver’s area Noise General N/A N/A Driving noise at 50 km/h must not exceed 70 dB(A) at the bus operator’s ear height (measuring method in accordance with DIN ISO 5128). Noise level at low idle must not exceed 55 dB(A). The driving expressed as an Leq (taken over two minutes) at 50 km/h, shall not exceed 70 dB(A) at the bus operator’s ear height (measured in accordance with ISO 5128). Noise level, when the bus is stationary and engine is idle, shall be > 60 dB(A). Yes
tcrp_rpt_185_DesignTool1.docx