"Patrol routes" refers to specific paths or directions that are used by security personnel or police officers to regularly monitor and protect an area or location. Full definition
From here, simply target the machine whose patrol route you'd like to see. (twinfinite.net)
This will be based on the availability of hiding spots and police patrol routes in relation to where evidence, collectables, bodies and blood puddles are situated. (squarexo.co.uk)
That's all you need to know to see machine patrol routes in Horizon Zero Dawn. (twinfinite.net)