1-Plank Trucks

1-plank trucks are rolling stock used for transporting goods and materials throughout the railways, such as the North Western Railway.

They are also simply known as trucks in the UK narration or cars in the US narration.

Thomas & Friends
Thomas used two of these trucks to take steel frames to repair the Sodor Suspension Bridge.

Thomas used one of these trucks to take a light bulb to the lighthouse at Tidmouth Beach, however, after going fast, Thomas crashed into a barrier and smashed the light bulb.

Two of these trucks were pulled by a pump trolley operated by two workmen at Knapford Station Yard.

Stephen had to take a truck of jam barrels from Brendam Docks to Ulfstead Castle, however, after Spencer pushed him, Stephen crashed into the buffers and four barrels of jam flew all over the Earl, Lady Hatt and the Fat Controller.

Basis
The 1-plank trucks are based on the real London and North Western Railway (LNWR) Diagram 103 1-plank open wagons. These wagons were owned by the LNWR with some later being owned by the London, Midland and Scottish Railway.

In the CGI series, the 1-plank trucks have a gap on all sides, unlike their basis.

Livery
In the model series, the 1-plank trucks are painted in different liveries, such as yellow, red, brown and black, all in the same shade.

In the CGI series, the 1-plank trucks are painted in either the same or different shade of teal.

List of Container Variants
The 1-plank trucks have also been used for transporting containers in the shape of box vans:

Appearances
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Thomas & Friends

 * Series 8 - Thomas and the Circus and Chickens to School
 * Series 9 - Thomas Tries His Best
 * Series 10 - Percy and the Funfair and Sticky Toffee Thomas
 * Series 11 - Thomas and the Lighthouse, Don't be Silly, Billy and Percy and the Left Luggage
 * Series 12 - Rosie's Funfair Special and Tram Trouble
 * Series 13 - Splish Splash Splosh, Buzzy Bees and Hiro Helps Out
 * Series 14 - Pop Goes Thomas, Thomas and Scruff and Merry Misty Island
 * Series 15 - Up, Up and Away!, Surprise, Surprise, Stop that Bus!, Stuck on You, Percy the Snowman and Tree Trouble
 * Series 16 - Express Coming Through, Bust My Buffers!, Percy and the Calliope, Emily's Winter Party Special and Muddy Matters
 * Series 17 - Steamie Stafford, Not Now, Charlie!, The Phantom Express, Percy's Lucky Day, Bill or Ben?, The Missing Christmas Decorations, Away From the Sea, Gone Fishing and The Afternoon Tea Express
 * Series 18 - Old Reliable Edward, Disappearing Diesels, Duck in the Water, Missing Gator, No Steam Without Coal, Spencer's VIP, Long Lost Friend, Last Train for Christmas, The Perfect Gift and Emily Saves the World
 * Series 19 - A Cranky Christmas, No Help at All and Goodbye Fat Controller
 * Series 20 - Sidney Sings
 * Series 21 - Springtime for Diesel
 * Series 22 - Outback Thomas, Seeing is Believing and Counting on Nia
 * Series 23 - Chucklesome Trucks and Diesel Glows Away
 * Series 24 - World of Tomorrow, Yong Bao and the Tiger, Gordon and Rebecca, Coming Through!, Kenji on the Rails Again and Thomas' Animal Friends

Specials

 * 2005 - Calling All Engines!
 * 2008 - The Great Discovery
 * 2011 - Day of the Diesels
 * 2012 - Blue Mountain Mystery
 * 2013 - King of the Railway
 * 2014 - Tale of the Brave
 * 2015 - The Adventure Begins
 * 2017 - Journey Beyond Sodor
 * 2018 - Big World! Big Adventures!

Learning Segments
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 * Calling All Engines! - Which Way Should Thomas Go?
 * Series 9 - What Route Should Thomas Take?
 * Series 10 - Where is Henry's Coal?

Trivia

 * Another name for a 1-plank truck is a "conflat", a shortening of container flat, as 1-plank trucks are also used for transporting containers whilst also doing regular flatbed type duties.

Merchandise

 * Wooden Railway
 * Bachmann