In my opinion a green route is which has the least number of stops. Stopping the car, and accelerating needs much fuel.

שלומות,
כיום המערכת מאפשרת בחירת מסלול
אוטומטית בשתי אופציות: קצר בזמן או קצר במרחק.
לפעמים מתקבלות תוצאות מגוחכות תמורת חסכון של דקה שתים תשלום של הרבה קילומטרים ולהיפך.
הרעיון- הוספת אופציה אוטומטית שלישית ל"מסלול כלכלי".
חישוב המסלול הכלכלי : אורך המסלול בק"מ מוכפל בעלות לק"מ פלוס משך המסלול מוכפל בעלות הזמן.
החישוב יבוצע לכלל המסלולים והמערכת תציג את המסלול עם הערך הנמוך ביותר.
הערכים של עלות לק"מ ועלות הזמן יכולים להקבע ע"י ברירת מחדל של המערכת או בהזנה ידנית של המשתמש (כל אחד לעצמו)

Yes, I agree.
Sometimes it can be nor fastest, nor shortest, maybe something in the middle, like in examples of speed and Gyula.

Including your vehicle's type of fuel, such as flex fuels in the "My Waze" section could help calculate this as well.

the "green" choice is immobility; Shame on you for consuming resources AND producing 'evil' CO2!

"green" non-hypocritical diet = carrion

Yes, agreed. Would be fine to see the average speeds as well!

Yes, Gyula's comment would be fine, but the most significat waze data was missing.

I guess with the informations provided, cannot make difference without speed (average).
you have to calculate with v=s/t
in this case, easy to calculate with the info

1. 35km, 30 minutes -> 70km/h
2. 18km 31 minutes -> 35 km/h
3. 15km 40 minutes -> 23 km/h

with the average speed, easy to make the best choice.
the 2. average city speed. economy...

the first is the much faster (less traffic jam, less traffic lamps)
second is optimal (or economy, name as you want)
third is the sucker road...

am i right?

The green alternative would be a route that is almost as fast as the fastest one, but is much shorter. For example, if you have three routes:
1. 35km, 30 minutes
2. 18km 31 minutes
3. 15km 40 minutes

clearly the first one is the fastest, and the third is the shortest. The second alternative could be the green one: it is only 1 minute slower but only half the distance, likely resulting in much lower fuel consumption.

In order to save fuel and money, what do you think to have a preview of the profile ?
Choising a flat road instead a road with up's and down's, your drive is safe for consumption.
If we could add the car profile, with regular consumption in Urban, Highway & combined, we can see the best choice for saving money.

Last topic, Waze could an EPEAT software or other certified software.