Have any units got square headlights?

[Christmas]

As the title suggests, any unit or loco that I can think of has round headlights. Even 321, 90, HSTs all have round lights behind a screen.
With the 1980s fashion for cars to adopt properly square and rectangular headlights, I'm surprised that the train design industry never switched too.
Or am I wrong?

 

[DanNCL]

London Underground D Stock and 1983 stock both had square headlights, as well as the red and blue trains of 1986 stock (but not the green train). Those are the only ones I can think of.

 

[Sun Chariot]

Class 93 and 99 are the first examples of square LED lighting I've seen on locos.

With older halogen / filament / wick lamps, round lenses give out an equal light beam.
DMU classes 141 and 151 had rectangular marker lights, but with round lamp areas behind the plastic lenses.

Even square and rectangular headlight cars actually used a round lamp area and corners infilled with reflective lens. My 1986 Rover SD1 being a prime example.