Post

1. A road barrier post, comprising:

at least one aperture on alternate sides of the post which, in use, each receives and retains at least one cable therein, wherein each aperture includes:

a top edge extending from a side of the post to each aperture,

wherein the top edge comprises a distal linear surface and a proximal linear surface, said distal linear surface extending to the side of the post and forming a quick cable release portion, and said proximal linear surface forming the remainder of the top edge, the proximal linear surface extending from the distal linear surface toward a longitudinal axis of the post, and

wherein the distal linear surface comprises a first angle relative to a horizontal line transverse to the longitudinal axis, that is greater than a second angle of the proximal linear surface relative to the horizontal line, wherein the first angle and the second angle are positive non-zero angles so as to reduce:

the travel path of or;

any frictional contact with;

the at least one cable during ejection from the aperture following a collision by a vehicle.

2. The post as claimed in claim 1 , wherein in use, the post is hollow and includes a cap that fits seamlessly over the open-ended top of the post and at least one elongated appendage extending from the cap and substantially inside the post, wherein the cap and appendage are integrally formed as a single piece.

3. A barrier which includes a post as claimed in claim 1 together with a plurality of cables supported in the apertures of the post.