What should you do with the Fast Idle Switch during city idling?

Turning off the Fast Idle Switch during city idling is essential for several reasons related to environmental regulations and operational efficiency. When in a dense urban environment, idling for extended periods can lead to unnecessary fuel consumption and increased emissions, which contribute to air pollution. By deactivating the Fast Idle Switch, the bus engine can operate more efficiently and adhere to local idling laws typically aimed at reducing environmental impact.

Moreover, keeping the Fast Idle Switch off allows the vehicle to conserve fuel and minimize engine wear since constant high idle speeds are not necessary for basic accessory functioning during stops. This practice not only promotes efficient fuel use but also improves overall vehicle health, allowing for better maintenance and longevity of the bus.

Maintaining the Fast Idle mode can lead to higher fuel costs over time and may violate city regulations regarding engine idling limits. Hence, ensuring the switch is off during city idling contributes to a more sustainable transport operation, aligning with the Chicago Transit Authority's objectives of providing efficient and environmentally responsible public transit services.