According to:
Uber’s use of fewer safety sensors prompts questions after Arizona...
Current Uber Volvo vehicles only have 1 lidar for each car while GM has 5 and Waymo has 6.
Prior Uber Ford Fusion had:
7 lidars
7 radars
20 cameras
But current Uber Volvo's sensors count are down for lidars and cameras:
1 lidar (decreased from 7)
10 radars (increased from 7)
7 cameras (decreased from 20)
The problem with current Uber Volvo is: the car is too high, much higher than the previous Uber Ford Fusion so a single roof lidar cannot cover low ground due to vertical beaming limitation.
When switching from Ford Fusion to Volvo the logical way should be to increase the numbers of lidar to cover the low ground as well and not a reduction.