System for generating proximity warnings on a site, particularly a surface mine, a construction site, or an agricultural area, on which a regular size object, particularly a person or a street legal vehicle, is at risk from a movement of an oversized movable object, particularly a haul truck, a crane, a dragline, an excavator, a shovel, or a tractor, the system comprising • a point-to-point radio ranging system comprising ∘ a set of anchors (5,5a,5b,5c,5d,6,20), namely radio frequency devices adapted and specifically foreseen to be mounted on the oversized object, ∘ a tag, namely a radio frequency device adapted and specifically foreseen to be mounted on the regular size object (2,3), and ∘ a distance determining unit configured for providing a set of distance determinations between each one of the set of anchors (5,5a,5b,5c,5d,6,20) and the tag, based on a defined measuring protocol, particularly based on the ALOHA protocol, of a time-of-flight measurement by radio frequency signals, particularly ultra-wideband signals, • a warning unit configured for providing a proximity warning based on the set of distance determinations, wherein the system further comprises • an anchor status dataset stored in a system storage, comprising information on local positions within an arrangement of the set of anchors (5,5a,5b,5c,5d,6,20), wherein a local position is assigned to each one of the set of anchors (5,5a,5b,5c,5d,6,20), • a position determining unit configured for determining position information of the tag relative to the arrangement of the set of anchors (5,5a,5b,5c,5d,6,20), based on an automated procedure comprising the steps of ∘ identifying one of the set of anchors (5,5a,5b,5c,5d,6,20) as a position determination anchor, wherein the position determination anchor is defined as the anchor with the closest measured distance to the tag determined by the distance determining unit, and ∘ assigning a field of observation to the position determination anchor, particularly a field of solid angle, based on the anchor status dataset, wherein the warning unit comprises a position indicator (9,9') configured for indicating the position of the tag relative to the arrangement of anchors (5,5a,5b,5c,5d,6,20), based on at least • a first indication associated with the field of observation assigned to the position determination anchor, and • a second indication associated with the distance between the position determination anchor and the tag. • a point-to-point radio ranging system comprising ∘ a set of anchors (5,5a,5b,5c,5d,6,20), namely radio frequency devices adapted and specifically foreseen to be mounted on the oversized object, ∘ a tag, namely a radio frequency device adapted and specifically foreseen to be mounted on the regular size object (2,3), and ∘ a distance determining unit configured for providing a set of distance determinations between each one of the set of anchors (5,5a,5b,5c,5d,6,20) and the tag, based on a defined measuring protocol, particularly based on the ALOHA protocol, of a time-of-flight measurement by radio frequency signals, particularly ultra-wideband signals, ∘ a set of anchors (5,5a,5b,5c,5d,6,20), namely radio frequency devices adapted and specifically foreseen to be mounted on the oversized object, ∘ a tag, namely a radio frequency device adapted and specifically foreseen to be mounted on the regular size object (2,3), and ∘ a distance determining unit configured for providing a set of distance determinations between each one of the set of anchors (5,5a,5b,5c,5d,6,20) and the tag, based on a defined measuring protocol, particularly based on the ALOHA protocol, of a time-of-flight measurement by radio frequency signals, particularly ultra-wideband signals, • a warning unit configured for providing a proximity warning based on the set of distance determinations, wherein the system further comprises • an anchor status dataset stored in a system storage, comprising information on local positions within an arrangement of the set of anchors (5,5a,5b,5c,5d,6,20), wherein a local position is assigned to each one of the set of anchors (5,5a,5b,5c,5d,6,20), • a position determining unit configured for determining position information of the tag relative to the arrangement of the set of anchors (5,5a,5b,5c,5d,6,20), based on an automated procedure comprising the steps of ∘ identifying one of the set of anchors (5,5a,5b,5c,5d,6,20) as a position determination anchor, wherein the position determination anchor is defined as the anchor with the closest measured distance to the tag determined by the distance determining unit, and ∘ assigning a field of observation to the position determination anchor, particularly a field of solid angle, based on the anchor status dataset, wherein the warning unit comprises a position indicator (9,9') configured for indicating the position of the tag relative to the arrangement of anchors (5,5a,5b,5c,5d,6,20), based on at least ∘ identifying one of the set of anchors (5,5a,5b,5c,5d,6,20) as a position determination anchor, wherein the position determination anchor is defined as the anchor with the closest measured distance to the tag determined by the distance determining unit, and ∘ assigning a field of observation to the position determination anchor, particularly a field of solid angle, based on the anchor status dataset, • a first indication associated with the field of observation assigned to the position determination anchor, and • a second indication associated with the distance between the position determination anchor and the tag.