The logic for assigning rides is fair and simple. You get the ride if both following criteria have been met:
1. Your Pin and the pickup location are within your setting "Max distance to pickup".
2. The value of the rides currently assigned to you is the lowest compared to other drivers.
In other words, every ride goes to the less "booked" driver whose Max Distance setting covers the distance to the ride's pickup location.
For example, if you're already booked for rides worth, let say, $200 and each driver around the ride's pickup location got booked for a greater amount, then the ride goes to you.
Note:
Lyft server is discharging new rides in batches, however, the Skeddy ride-assignment algorithm is assigning rides one by one, and the above formula is applied for each and every ride in a sequence.
As a result, if in the example above you got a $50 ride and became "booked" for $250, then the next ride might not go to you. Instead, Skeddy will examine other drivers again, and the new ride will go to the driver "booked" for just $240.
This way we ensure the uniform and fair distribution of rides among the drivers.