It's about as tall as The Hollywood Sign
It's about one-and-one-tenth times as long as a Semitrailer
In other words, 3 rods is 1.031 times the length of a Semitrailer, and the length of a Semitrailer is 0.96990 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 2.9090 rods (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-and-one-fifth times as tall as a Brachiosaurus
In other words, the height of a Brachiosaurus is 0.830 times 3 rods.(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 2.60 rods. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about four-fifths as long as a Bowling Lane
In other words, 3 rods is 0.787620 times the length of a Bowling Lane, and the length of a Bowling Lane is 1.26960 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 3.8090 rods. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about three-fourths as long as a Cricket Pitch
In other words, the length of a Cricket Pitch is 1.333330 times 3 rods.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 4 rods. The wickets at either end of the pitch stand 0.1431640 rods tall including the bails.
It's about one-and-two-fifths times as tall as a Telephone Pole
In other words, the height of a Telephone Pole is 0.710 times 3 rods.(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 2.20 rods tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about one-and-four-fifths times as long as a London bus
In other words, the length of a London bus is 0.5560 times 3 rods.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 1.670 rods in length. The buses were said to be well-designed for travel in the London traffic, as they offered an open door for riders to board and exit even while the bus was moving at low speeds, and a full-time conductor to collect fares.