Intent of specifications



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INDICATOR LAMPS


To promote safety, the following telltale indicator lamps shall be integral to the gauge assembly and are located above and below the center gauges.  The indicator lamps shall be "dead-front" design that is only visible when active.  The colored indicator lights shall have descriptive text or symbols.

The following amber telltale lamps shall be present:

- Low coolant

- Trac cntl (traction control) (where applicable)

- Check engine

- Check trans (check transmission)

- Aux brake overheat (Auxiliary brake overheat)

- Air rest (air restriction)

- Caution (triangle symbol)

- Water in fuel

- DPF (engine diesel particulate filter regeneration)

- Trailer ABS (where applicable)

- Wait to start (where applicable)

- HET (engine high exhaust temperature) (where applicable)

- ABS (antilock brake system)

- MIL (engine emissions system malfunction indicator lamp) (where applicable)

- Side roll fault (where applicable)

- Front air bag fault (where applicable)

The following red telltale lamps shall be present:        

- Warning (stop sign symbol)

- Seat belt

- Parking brake

- Stop engine

- Rack down

The following green telltale lamps shall be provided:

- Left turn

- Right turn

- Battery on

The following blue telltale lamp shall be provided:

- High beam


ALARMS


Audible steady tone warning alarm:  A steady audible tone alarm shall be provided whenever a warning message is present.

Audible pulsing tone caution alarm:  A pulsing audible tone alarm (chime/chirp) shall be provided whenever a caution message is present without a warning message being present.

Alarm silence:  Any active audible alarm shall be able to be silenced by holding the ignition switch at the top position for three (3) to five (5) seconds.  For improved safety, silenced audible alarms shall intermittently chirp every 30 seconds until the alarm condition no longer exists.  The intermittent chirp shall act as a reminder to the operator that a caution or warning condition still exists.  Any new warning or caution condition shall enable the steady or pulsing tones respectively.

INDICATOR LAMP AND ALARM PROVE-OUT


A system shall be provided which automatically tests telltale indicator lights and alarms located on the cab instrument panel.  Telltale indicators and alarms shall perform prove-out at initial power-up to ensure proper performance.

CONTROL SWITCHES


For ease of use, the following controls shall be provided immediately adjacent to the cab instrument panel within easy reach of the driver.

Emergency master switch:  A molded plastic push button switch with integral indicator lamp shall be provided.  Pressing the switch shall activate emergency response lights and siren control.  A green lamp on the switch provides indication that the emergency master mode is active.  Pressing the switch again disables the emergency master mode.

Headlight / Parking light switch:  A three (3)-position maintained rocker switch shall be provided.  The first switch position shall deactivate all parking lights and the headlights.  The second switch position shall activate the parking lights.  The third switch position shall activate the headlights.

Panel backlighting intensity control switch:  A three (3)-position momentary rocker switch shall be provided.  The first switch position decreases the panel backlighting intensity to a minimum level as the switch is held.  The second switch position is the default position that does not affect the backlighting intensity.  The third switch position increases the panel backlighting intensity to a maximum level as the switch is held.

The following standard controls shall be integral to the gauge assembly and are located below the right hand gauges.  All switches have backlit labels for low light applications.

High idle engagement switch:  A two (2)-position momentary rocker switch with integral indicator lamp shall be provided.  The first switch position is the default switch position.  The second switch position shall activate and deactivate the high idle function when pressed and released.  The "Ok To Engage High Idle" indicator lamp must be active for the high idle function to engage.  A green indicator lamp integral to the high idle engagement switch shall indicate when the high idle function is engaged.

"Ok To Engage High Idle" indicator lamp:  A green indicator light shall be provided next to the high idle activation switch to indicate that the interlocks have been met to allow high idle engagement.

The following standard controls shall be provided adjacent to the cab gauge assembly within easy reach of the driver.  All switches shall have backlit labels for low light applications.

Ignition switch:  A three (3)-position maintained/momentary rocker switch shall be provided.  The first switch position shall deactivate vehicle ignition.  The second switch position shall activate vehicle ignition.  The third momentary position shall disable the Command Zone audible alarm if held for three (3) to five (5) seconds.  A green indicator lamp shall be activated with vehicle ignition.

Engine start switch:  A two (2)-position momentary rocker switch shall be provided.  The first switch position is the default switch position.  The second switch position shall activate the vehicle's engine.  The switch actuator is designed to prevent accidental activation.

4-way hazard switch:  A two (2)-position maintained rocker switch shall be provided.  The first switch position shall deactivate the 4-way hazard switch function.  The second switch position shall activate the 4-way hazard function.  The switch actuator shall be red and includes the international 4-way hazard symbol.

Heater, defroster, and optional air conditioning control panel:  A control panel with membrane switches shall be provided to control heater/defroster temperature and heater, defroster, and air conditioning fan speeds.  A green LED status bar shall indicate the relative temperature and fan speed settings.

Turn signal arm:  A self-canceling turn signal with high beam headlight and windshield wiper/washer controls shall be provided.  The windshield wiper control shall have high, low, and intermittent modes.

Parking brake control:  An air actuated push/pull park brake control valve shall be provided.

Chassis horn control:  Activation of the chassis horn control shall be provided through the center of the steering wheel.

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