A pedes train is a person walking along a road or in a developed area.
Feet.
Pedes = "you are asking (for)"
deeps pedes
Pedes.
dorsales pedes
feet
"pedes" for the noun. "Pedester" for the adjective.
un train
by train
The motto of National University of Tucumán is 'Pedes in terra ad sidera visus'.
A train
If I travelled on a train, my mode of travel is by train.