It seems like the radar/camera system Toyota uses for its Pre Collision System has the same weaknesses as Tesla's sensor suite but the list of exceptions in the Toyota manual is pretty brutally honest about the issues. Just for pedestrians it warns: Some pedestrians such as the following may not be detected by the radar sensor and camera sensor, preventing the system from operating properly:

• Pedestrians shorter than approximately 3.2 ft. (1 m) or taller than approx- imately 6.5 ft. (2 m)

• Pedestrians wearing oversized clothing (a rain coat, long skirt, etc.), mak- ing their silhouette obscure

• Pedestrians who are carrying large baggage, holding an umbrella, etc., hiding part of their body

• Pedestrians who are bending forward or squatting

• Pedestrians who are pushing a stroller, wheelchair, bicycle or other vehi- cle

• Groups of pedestrians which are close together

• Pedestrians who are wearing white and look extremely bright

• Pedestrians in the dark, such as at night or while in a tunnel

• Pedestrians whose clothing appears to be nearly the same color or brightness as their surroundings

• Pedestrians near walls, fences, guardrails, or large objects

• Pedestrians who are on a metal object (manhole cover, steel plate, etc.) on the road

• Pedestrians who are walking fast

• Pedestrians who are changing speed abruptly

• Pedestrians running out from behind a vehicle or a large object

• Pedestrians who are extremely close to the side of the vehicle (outside rear view mirror, etc.)