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The gauges shall have high -contrast white scales with orange pointers. The following gauges shall be <br />included on the display: <br />• Speedometer that indicates vehicle speed. The scale on the speedometer shall read from 0 to 100 <br />MPH. A numerical display of vehicle speed shall also be shown on the gauge. <br />• Tachometer that indicates engine speed. The scale of the tachometer shall read from 0 to 3000 <br />RPM. <br />• Primary and secondary air pressure gauges that indicate the pressure in the primary and secondary <br />air systems. The scale of the air pressure gauges shall read from 0 to 160 pounds per square inch <br />(PSI). The gauge icon and scale shall turn amber when the system pressure drops below 70 PSI. The <br />icon and scale shall turn red when the system pressure drops below 62 PSI. An audible alarm shall <br />also sound when air pressure is low. <br />• Fuel gauge. The fuel gauge shall read from empty to full as a fraction of full tank capacity. The <br />gauge icon and scale shall turn amber when the fuel level is below 1/8th tank capacity (1/4th tank in <br />pump mode). An audible alarm shall also sound with low fuel level. <br />• Diesel exhaust fluid (DEF) gauge. The DEF gauge shall read from empty to full as a fraction of full <br />tank capacity. The gauge icon and scale shall turn amber, and an audible alarm shall sound to <br />indicate low DEF level. <br />• Engine oil pressure gauge. The scale of the engine oil pressure gauge shall read from 0 to 100 PSI. <br />The gauge icon and scale shall turn red, and an audible alarm shall sound to indicate low oil <br />pressure. <br />• Engine coolant temperature gauge. The scale of the coolant temperature shall read from 100 to 250 <br />degrees Fahrenheit ff ). The gauge icon and scale shall turn red, and an audible alarm shall sound to <br />indicate high coolant temperature. <br />• Voltmeter indicating chassis system voltage. The scale of the voltmeter shall be from 10 to 18 <br />volts. The gauge icon and scale shall turn red, and an audible alarm shall sound when the system <br />voltage drops below 11.8 volts for more than 120 seconds in accordance with the requirements of <br />NFPA 1901. The gauge icon and scale shall turn red, and an audible alarm shall sound when the <br />system voltage rises above 15.5 volts for more than 5 seconds. <br />• Transmission temperature gauge. The scale of the transmission temperature shall read from 100 to <br />300 degrees Fahrenheit ff ). The gauge icon and scale shall turn amber, and an audible alarm shall <br />sound to indicate high transmission temperature. <br />The GIC shall include thirty-six (36) colored telltales to indicate vehicle operating conditions. The GIC <br />shall provide text -based warning messages to accompany all telltales. The GIC shall contain an audible <br />alarm capable of providing different alert sounds based on the type of warning. The audible alarm shall <br />be capable of being heard from all seating positions in the cab. The operator shall be able to silence <br />active alarms that are permitted to be silenced by applicable regulations. The GIC shall contain the <br />following indicators and produce the following audible alarms when supplied in conjunction with <br />applicable configurations: <br />RED TELLTALES <br />• Air Filter Restriction - indicates restriction of the engine air intake filter <br />• Air Pressure (Primary) — indicates critically low primary system air pressure <br />• Air Pressure (Secondary) — indicates critically low secondary system air pressure <br />• Cab Tilt Warning - indicates the cab tilt system locks are not engaged <br />• Coolant Temperature — indicates high engine coolant temperature <br />• Low Coolant - indicates critically low engine coolant <br />