high-visibility jacket
hi-vis jacket
hi-viz jacket

To assist road safety for their pupils, the school designed fashionable high-visibility jackets.

Which brings me to the menace inherent in the burgeoning fad for high-visibility jackets.

Carry and use a high-visibility jacket or waistcoat and replace it when it is dirty or faded.

During the late construction a protester from the rights group Fathers 4 Justice scaled the tower wearing a high-visibility jacket unfurling a banner in the process.

The normal GMP uniform is now combat-style trousers and a black zipped-neck polo shirt; a high-visibility jacket is worn as necessary.

I had to pre-register my van, take 3 forms of ID, wear a high-visibility jacket and then join the queue with London's binmen because my van was 'oversize'.

After evacuating the now stalled trains on the platforms, they grabbed their torches and high-visibility jackets and made their way into the tunnel, from where thick clouds of smoke and dust were issuing.

A two-row Chicago-style Sillitoe tartan is borne on the high-visibility vests of the Vancouver Police (along the edges of the horizontal and vertical reflective strips), but not on their high-visibility jackets nor other uniforms.