An attachment assembly and a method for mounting a traffic control device to a mast arm are provided. The attachment assembly includes an attachment device. The attachment device includes a first portion operably connect to the mast arm so that a first surface of the first portion is oriented toward the mast arm, a second portion extending substantially parallel to the first portion along at least a portion of a first length, a second surface of the second portion is oriented toward the traffic control device, and a third portion having a third length and extending between the first portion and the second portion so that a gap is formed between a second face of the first portion and a first face of the second portion that allows the attachment device to flex when the traffic control device is mounted to the mast arm.

Disclosed is a vehicle barrier, such as a bollard assembly, including a main body surrounding a post, wherein the main body is operable to be positioned below grade, and wherein the post is operable to extend above grade. The main body may include an upper plate including an opening to receive the post, a lower plate opposite the upper plate, and a plurality of support members extending between the upper plate and the lower plate, wherein two or more support members of the plurality of support members extend radially from a central axis extending through the post. The bollard assembly may further include a support assembly coupleable with the main body, wherein the support assembly includes at least one support bar insertable between the upper plate and the lower plate.

Disclosed is a vehicle barrier, such as a bollard assembly, including a main body surrounding a post, wherein the main body is operable to be positioned below grade, and wherein the post is operable to extend above grade. The main body may include an upper plate including an opening to receive the post, a lower plate opposite the upper plate, and a plurality of support members extending between the upper plate and the lower plate, wherein two or more support members of the plurality of support members extend radially from a central axis extending through the post. The bollard assembly may further include a support assembly coupleable with the main body, wherein the support assembly includes at least one support bar insertable between the upper plate and the lower plate.

A sign post for supporting a sign, the sign post comprising: a support member; the sign comprising having a planar sign face and an opposing planar back face, wherein the sign is affixed to the support member; a compliance module comprising a printed circuit board comprising circuitry for receiving measurements associated with at least one condition of the sign post and transmitting data; and an enclosure for housing the compliance module.