ETS Limited Idling Program

ETS Bus Idling Initiative

Edmonton Transit System (ETS) is a strong advocate of the City of Edmonton’s (COE) EcoVision initiative - The Way We Green. The objective of the program is to reduce fuel consumption and exhaust emissions by reducing excessive ETS bus idling as part of COE’s Environmental Management System (Enviso).

As Edmonton moves toward a carbon-neutral city, the Limited Idle Program is a bold move of living within the limits of nature to become leaders in energy efficiency and energy conservation.

Fossil fuel emissions account for over half of the harmful greenhouse gases (GHG) emissions found in our hemisphere. Greenhouse gas absorbs and emits radiation causing the greenhouse effect of climate changes with potentially disastrous implications for the planet.

In 2011, the Limited Idle Program saved ETS approximately 586.2 litres of fuel and prevented the approximate emission of 1.675 tonnes of generated carbon dioxide. For every ETS bus on the road, 40 other exhaust pipes are potentially removed from COE roads. An ETS bus emits approximately one quarter the GHG's per passenger when juxtaposed against non-ETS vehicles carrying one person.

Limited Idle Protocol

Traditionally, ETS’ Limited Idle Program runs from May 1 to September 30.  Transit Operators are required to shut down their bus engines under the following conditions:

  • Scheduled layover is 3 minutes or longer
  • Ambient temperature is 10°C or warmer
  • Daylight prevailing
  • Air reservoir pressure is greater than 100 psi
  • The "Exhaust Regen Needed" and the "High Exhaust Temp" indicators on the bus Instrument Panel must be off.

Source: Environment Canada

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