In the 1950s, the New York Tunnel Police used small, specialized electric vehicles to patrol the Holland and Lincoln Tunnels. These are called "catwalk cars."

These were used until 2011. Some NYPD were too large to fit in the cars and now they just use cameras.

@futurebird another pic here from a manufacturer's advert. they do look like a really tight squeeze tbf!

https://imgur.com/catwalk-car-used-by-police-ny-lincoln-tunnel-1966-xghy9IP

"Catwalk car" used by police in the NY Lincoln Tunnel, 1966

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@sarahdalgulls

Lace up that corset!

@futurebird @sarahdalgulls a police uniform that has an external corset and big black boots: naughty!

@sarahdalgulls @futurebird

Holy Moly! Do they have a breathing apparatus to survive going up and down that tunnel all day?

@jfparis @sarahdalgulls @futurebird The tunnels have forced fresh air ventilation systems (the towers for which are interesting weird architectural artifacts) which one hopes are reasonably effective — since all the autos in the tunnel have people in them, and those cars aren't sealed; in fact their cabin air systems are biased in favor of continuous air exchange, unless the occupants go out of their way to override that.