That's it. The government wanted to recognize some unique circumstances in this case, that these individuals may not have the same opportunities to, let's say, leave their cars at home and take public transit, because there is no public transit. In a way, this is a simplified explanation, but it is to recognize some unique circumstances for individuals living in rural areas. They've decided to increase the incentive by 10%.
On November 6th, 2018. See this statement in context.