Tech Tree - Iron Horse

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Standard Gauge

General Purpose / Express Engines

Passengers, mail and valuables
High-priority freight cargos like food and engineering supplies, which can be carried in high-speed mail cars and express cars
General freight, but if a dedicated freight engine is available with similar power, the freight engine will generally be lower cost to buy and run

Intro Year:	1860	1900	1930	1960	1990	2020
Light General Purpose / Express	4-4-2 Lark Steam 500 hp 60 mph 8i Replaced by 2-6-2 Merrylegs	2-6-2 Merrylegs Steam 650 hp 75 mph 8i Replaced by 2-6-2 Proper Job	2-6-2 Proper Job Steam 800 hp 90 mph 8i Replaced by Kelpie	Kelpie Diesel 1450 hp 105 mph 13i Replaced by Griffon	Griffon Diesel 1650 hp 120 mph 13i
Light General Purpose / Express (Joker)		0-10-0 Decapod Steam 650 hp 75 mph 8i Replaced by 0-6-4 Stag	0-6-4 Stag Steam 800 hp 90 mph 8i Replaced by Foxhound	Foxhound Diesel 1450 hp 105 mph 13i Replaced by Lynx	Lynx Diesel 1650 hp 120 mph 13i
Light General Purpose / Express		Pinhorse Electric (AC) 1050 hp 75 mph 14i Replaced by Argus	Argus Electric (AC) 1300 hp 90 mph 14i Replaced by Booster	Booster Diesel 600 hp Electric (AC) 1600 hp 105 mph 5i Replaced by Tornado	Tornado Diesel 750 hp Electric (AC) 1900 hp 120 mph 6i
General Purpose / Express	4-2-2 Spinner Steam 950 hp 60 mph 15i Replaced by 4-4-0 Carrack	4-4-0 Carrack Steam 1200 hp 75 mph 16i Replaced by 4-4-0 Tencendur	4-4-0 Tencendur Steam 1450 hp 90 mph 16i Replaced by Daring	Daring Diesel 1750 hp 105 mph 16i Replaced by Centaur	Centaur Diesel 2200 hp 120 mph 18i
General Purpose / Express (Joker)	2-4-0 Reliance Steam 950 hp 60 mph 15i Replaced by 4-4-0 Carrack	2-6-0 Braf Steam 1250 hp 75 mph 16i Replaced by 2-6-0 Diablo	2-6-0 Diablo Steam 1450 hp 90 mph 16i Replaced by Merlion	Merlion Diesel 1750 hp 105 mph 16i Replaced by Shredder	Shredder Diesel 2150 hp 120 mph 17i
General Purpose / Express (Joker)			Dynamo Electric (AC) 1900 hp 90 mph 21i Replaced by Cyclone		Cyclone Electric (AC) 2200 hp 120 mph 18i
Heavy General Purpose / Express		4-4-2 Swift Steam 1550 hp 75 mph 20i Replaced by 4-6-0 Strongbow	4-6-0 Strongbow Steam 1850 hp 90 mph 20i Replaced by Wyvern	Wyvern Diesel 2200 hp 105 mph 20i Replaced by Resilient	Resilient Diesel 2750 hp 120 mph 22i
Heavy General Purpose / Express (Joker)		4-6-0 Thunderer Steam 1500 hp 75 mph 20i Replaced by Intrepid		Intrepid Diesel 2200 hp 105 mph 20i Replaced by Constance		Constance Diesel 3450 hp Electric (AC) 4200 hp 120 mph 28i
Heavy General Purpose / Express (Joker)			2-6-2 Arrow Steam 1900 hp 90 mph 21i Replaced by Tenacious	Tenacious Diesel 2150 hp 105 mph 20i Replaced by Rapid	Rapid Diesel 2800 hp 120 mph 23i
Heavy General Purpose / Express (Joker)				Shoebox Diesel 950 hp Electric (AC) 2500 hp 105 mph 9i Replaced by Ultra Shoebox	Ultra Shoebox Diesel 1650 hp Electric (AC) 2800 hp 120 mph 13i
Super Heavy General Purpose / Express			2-8-2 Pegasus Steam 2300 hp 90 mph 25i Replaced by Dragon	Dragon Diesel 2750 hp 105 mph 26i Replaced by Onslaught	Onslaught Diesel 3450 hp 120 mph 28i
Super Heavy General Purpose / Express (Joker)			4-6-4 Streamer Steam 2300 hp 90 mph 25i Replaced by Vulcan	Vulcan Diesel 2750 hp 105 mph 26i Replaced by Dreadnought	Dreadnought Diesel 3450 hp 120 mph 28i Replaced by Defiant	Defiant Diesel 4150 hp 120 mph 34i
Super Heavy General Purpose / Express (Joker)			4-8-2 Hawkinge Steam 2350 hp 90 mph 26i Replaced by Falcon	Falcon Diesel 2800 hp 105 mph 26i Replaced by Rapid		Relentless Diesel 4200 hp 120 mph 35i
Super Heavy General Purpose / Express (Joker)				Roarer Electric (AC) 3000 hp 105 mph 28i Replaced by Fury	Fury Electric (AC) 3600 hp 120 mph 30i
Ultra Heavy General Purpose / Express		Hurly Burly Electric (AC) 1800 hp 75 mph 24i Replaced by Moor Gallop	Moor Gallop Electric (AC) 2500 hp 90 mph 27i Replaced by Stalwart	Stalwart Electric (AC) 3800 hp 105 mph 36i Replaced by Screamer	Screamer Electric (AC) 5000 hp 120 mph 41i
Ultra Heavy General Purpose / Express (Joker)				Zebedee Electric (AC) 4850 hp 120 mph 40i Replaced by Revolution		Revolution Diesel 2250 hp Electric (AC) 5400 hp 120 mph 18i
Ultra Heavy General Purpose / Express					Avenger Electric (AC) 6200 hp 120 mph / 140 mph (LGV) 51i
Ultra Heavy General Purpose / Express						Sizzler Electric (AC) 7200 hp 120 mph / 140 mph (LGV) 60i

Freight Engines

Recommended for all general freight except cargos like food and engineering supplies, which can be carried in high-speed mail cars and express cars, which freight engines can't haul at maximum speed.

Intro Year:	1860	1900	1930	1960	1990	2020
Light General Purpose / Freight (Joker)			0-8-0 Saxon Steam 1000 hp 60 mph 16i Replaced by Little Bear	Little Bear Diesel 1450 hp 75 mph 19i Replaced by Goliath	Goliath Diesel 1650 hp 87 mph 18i
Light General Purpose / Freight (Joker)	0-6-2 Buffalo Steam 650 hp 45 mph 14i Replaced by 0-8-0 Saxon		0-8-2 Yak Steam 1000 hp 60 mph 16i Replaced by Captain Steel	Captain Steel Diesel 1450 hp 75 mph 19i Replaced by General Endeavour	General Endeavour Diesel 1650 hp 87 mph 18i
Light General Purpose / Freight (Joker)		Stoat Electric (AC) 1050 hp 60 mph 17i Replaced by Zest		Zest Electric (AC) 1600 hp 87 mph 18i
General Purpose / Freight (Joker)			2-8-4 Celt Steam 1500 hp 60 mph 25i Replaced by Trojan	Trojan Diesel 1750 hp 75 mph 23i Replaced by Viking	Viking Diesel 2200 hp 87 mph 25i
General Purpose / Freight	0-6-0 Hercules Steam 1100 hp 45 mph 24i Replaced by 0-8-0 Eastern	0-8-0 Eastern Steam 1250 hp 45 mph 27i Replaced by 0-8-0 Haar	0-8-0 Haar Steam 1500 hp 60 mph 25i Replaced by Growler	Growler Diesel 1750 hp 75 mph 23i Replaced by Slug	Slug Diesel 2200 hp 87 mph 25i
Heavy General Purpose / Freight			2-8-0 Mainstay Steam 1850 hp 60 mph 30i Replaced by Maelstrom	Maelstrom Diesel 2200 hp 75 mph 29i Replaced by Doineann	Doineann Diesel 2750 hp 87 mph 31i
Heavy General Purpose / Freight (Joker)	0-6-0+0-6-0 Xerxes Steam 1450 hp 45 mph 32i Replaced by 0-6-0+0-6-0 Keen		0-6-0+0-6-0 Keen Steam 1800 hp 60 mph 30i Replaced by Yillen	Yillen Diesel 2200 hp 75 mph 29i Replaced by Doubletide	Doubletide Diesel 2750 hp 87 mph 31i
Super Heavy General Purpose / Freight		2-8-0 Vigilant Steam 1850 hp 45 mph 41i Replaced by 4-8-0 Lemon	4-8-0 Lemon Steam 2400 hp 75 mph 32i Replaced by Chinook	Chinook Diesel 2900 hp 75 mph 38i Replaced by Grid	Grid Diesel 3450 hp 87 mph 39i
Super Heavy General Purpose / Freight (Joker)		0-10-0 Girt Licker Steam 1850 hp 45 mph 41i Replaced by 2-6-0+0-6-2 Esk	2-6-0+0-6-2 Esk Steam 2400 hp 60 mph 40i Replaced by Withershins	Withershins Diesel 2900 hp 75 mph 38i Replaced by Bone	Bone Diesel 3450 hp 87 mph 39i
Super Heavy General Purpose / Freight (Joker)				Lion Diesel 3300 hp 87 mph 37i Replaced by Toaster		Toaster Diesel 4200 hp 87 mph 48i
Super Heavy General Purpose / Freight					Cheddar Valley Diesel 4200 hp 87 mph 48i
Super Heavy General Purpose / Freight (Joker)					Stentor Diesel 4200 hp 87 mph 48i
Ultra Heavy General Purpose / Freight (Joker)					Resistance Electric (AC) 5200 hp 87 mph 59i
Ultra Heavy General Purpose / Freight		Flindermouse Electric (AC) 2500 hp 60 mph 41i Replaced by Peasweep		Peasweep Electric (AC) 3700 hp 75 mph 49i Replaced by Flanders Storm	Flanders Storm Electric (AC) 6200 hp 87 mph 71i
Ultra Heavy General Purpose / Freight (Joker)			Dryth Electric (AC) 2900 hp 75 mph 38i Replaced by Tincans		Tincans Electric (AC) 6200 hp 87 mph 71i
Ultra Heavy General Purpose / Freight						Quietus Diesel 2750 hp Electric (AC) 7200 hp 87 mph 31i

Railcars / Multiple-Unit Trains

These run at similar speeds to freight trains, and are suited to
- short routes
- routes which are heavily used by freight trains, which limit the maximum speed of other trains on the route
Railcars can generally haul one additional unpowered coach, mail car or other wagon, on level routes
Railcars can be combined as needed

Intro Year:	1860	1900	1930	1960	1990	2020
Passenger Railbus (Joker)				Clipper Diesel 300 hp 75 mph 4i Replaced by Skipper	Skipper Diesel 400 hp 87 mph 4i Replaced by Zipper	Zipper Diesel 480 hp 99 mph 4i
Passenger Railcar General Purpose / High Capacity			Deasil Diesel 200 hp 60 mph 3i Replaced by Slammer	Slammer Diesel 300 hp 75 mph 4i Replaced by Tin Rocket	Tin Rocket Diesel 400 hp 87 mph 4i Replaced by Happy Train	Happy Train Diesel 500 hp 99 mph 5i
Passenger Railcar General Purpose / High Capacity			Athena Electric (AC) 320 hp 60 mph 5i Replaced by Geronimo	Geronimo Electric (AC) 420 hp 75 mph 5i Replaced by Breeze	Breeze Electric (AC) 520 hp 87 mph 5i Replaced by Zeus	Zeus Electric (AC) 620 hp 99 mph 6i

Intro Year:	1860	1900	1930	1960	1990	2020
Mail Railcar (Joker)						Cargo Sprinter Diesel 1650 hp 99 mph 16i
Mail Railcar			Gowsty Diesel 280 hp 60 mph 4i Replaced by Scooby	Scooby Diesel 420 hp 75 mph 5i Replaced by Plastic Postbox	Plastic Postbox Diesel 560 hp 87 mph 6i Replaced by Pylon
Mail Railcar			Ares Electric (AC) 400 hp 60 mph 6i Replaced by Dover	Dover Electric (AC) 540 hp 75 mph 7i Replaced by Jupiter	Jupiter Electric (AC) 680 hp 87 mph 7i Replaced by Pylon	Pylon Diesel 700 hp Electric (AC) 820 hp 99 mph 7i

Express Railcars / Multiple-Unit Trains

These run at express train speeds, and have more power but lower capacity than standard railcars
Express railcars can be combined as needed

Intro Year:	1860	1900	1930	1960	1990	2020
Passenger Railcar General Purpose / Express (Joker)			High Flyer Electric (AC) 1600 hp 90 mph 17i Replaced by Sunshine Coast	Sunshine Coast Electric (AC) 1900 hp 105 mph 18i Replaced by Olympic	Olympic Electric (AC) 2200 hp 120 mph 18i
Passenger Railcar General Purpose / Express (Joker)						Nimbus Diesel 1500 hp Electric (AC) 2500 hp 120 mph / 140 mph (LGV) 12i
Mail Railcar (Joker)					Chronos Electric (AC) 2800 hp 120 mph 23i

InterCity Express Trains

high-speed engines with dedicated high-speed coaches and mail cars
can attach other types of cars to haul freight cargos but will travel at less than maximum engine speed

Intro Year:	1860	1900	1930	1960	1990	2020
InterCity Express				Firebird Diesel 3300 hp 112 mph 29i Replaced by Blaze HST	Blaze HST Diesel 5000 hp 128 mph / 140 mph (LGV) 39i

InterCity Express Trains With Distributed Power

TGV-style electric passenger trains with very high speeds
power is distributed throughout the train
- engines are relatively low power
- every set of coaches attached to the engine adds more power
tilt bonus for higher speed through curves
attaching other types of cars is not recommended, the train will be very underpowered and will travel at much less than maximum engine speed

Intro Year:	1860	1900	1930	1960	1990	2020
InterCity Express					Helm Wind Electric (AC) 1900 hp 128 mph / 155 mph (LGV) 14i
InterCity Express (Joker)					Alizé Electric (AC) 1900 hp 128 mph / 155 mph (LGV) 14i
InterCity Express						Skeiron Electric (AC) 3200 hp 128 mph / 186 mph (LGV) 25i
InterCity Express (Joker)						Brenner Electric (AC) 3000 hp 128 mph / 186 mph (LGV) 23i

Driving Van Trailers

Attach to front or rear of express trains that have at least one other engine
Carries mail and express freight
Unpowered in real-life, but OpenTTD requires these to have some power so they can lead the train, so a low value is set

Intro Year:	1860	1900	1930	1960	1990	2020
Passenger Driving Cab (Joker)				Driving Trailer 105 mph 2i Replaced by Driving Trailer	Driving Trailer 120 mph 2i
Passenger Driving Cab (Joker)					High Speed Driving Trailer 120 mph / 140 mph (LGV) 2i
Passenger Driving Cab (Joker)						High Speed Driving Trailer 120 mph / 140 mph (LGV) 2i
Mail Driving Cab (Joker)					Driving Van Trailer 120 mph 2i
Mail Driving Cab (Joker)					High Speed Driving Van Trailer 120 mph / 140 mph (LGV) 2i
Mail Driving Cab (Joker)						High Speed Driving Van Trailer 120 mph / 140 mph (LGV) 2i
Driving Cab (Joker)		Autocoach Set 75 mph 0i Replaced by Clipper

Gronk!

Slow engines that have limited gameplay use but look nice.

Intro Year:	1860	1900	1930	1960	1990	2020
Gronk! (Joker)	Grub Steam 350 hp 35 mph 10i Replaced by Gronk			Gronk Diesel 400 hp 35 mph 11i
Gronk! (Joker)	0-6-0 Lamia Steam 350 hp 35 mph 10i Replaced by Chuggypig			Chuggypig Diesel 400 hp 35 mph 11i
Gronk! (Joker)	0-6-0 Fireball Steam 350 hp 35 mph 10i Replaced by Progress			Progress Diesel 400 hp 35 mph 11i
Gronk! (Joker)						Magnum 90 Battery Hybrid 900 hp 35 mph 25i

Lolz

Silly trains that have no gameplay purpose at all but look nice.

Intro Year:	1860	1900	1930	1960	1990	2020
Lolz (Joker)		Snowplough 75 mph 1i

Narrow Gauge

Narrow Gauge Trains

low power trains with low buy and run costs, and relatively low speeds
effective for short routes
can be moderately effective on longer routes

Intro Year:	1860	1910	1960	2010
General Purpose / Express				Lebeche Diesel 1200 hp 75 mph 16i
General Purpose / Express (Joker)				Higuma Diesel 1600 hp 75 mph 21i

Intro Year:	1860	1910	1960	2010
General Purpose	2-6-4 Bean Feast Steam 400 hp 45 mph 8i Replaced by Pikel		Pikel Diesel 600 hp 60 mph 10i
General Purpose (Joker)	2-6-2 Cheese Bug Steam 400 hp 45 mph 8i Replaced by Boar Cat		Boar Cat Diesel 600 hp 60 mph 10i
General Purpose	0-4-4-0 Thor Steam 600 hp 45 mph 13i Replaced by Gargouille		Gargouille Diesel 900 hp 60 mph 15i
General Purpose (Joker)		0-4-4-0 Alfama Steam 600 hp 45 mph 13i Replaced by Solano	Solano Diesel 900 hp 60 mph 15i
General Purpose (Joker)		4-8-0 Tyrconnell Steam 900 hp 45 mph 20i Replaced by Rockhampton	Rockhampton Diesel 1200 hp 60 mph 20i
General Purpose (Joker)		2-6-0+0-6-2 Nile Steam 900 hp 45 mph 20i Replaced by Hinterland	Hinterland Diesel 1200 hp 60 mph 20i

Narrow Gauge Railcars

can generally haul one additional unpowered coach, mail car or other wagon, on level routes
narrow gauge railcars can be combined as needed

Intro Year:	1860	1910	1960	2010
Passenger Railbus			Mumble Diesel 400 hp 60 mph 6i Replaced by Snapper	Snapper Diesel 560 hp 75 mph 7i
Passenger Railbus (Joker)				Golfinho Diesel 900 hp 75 mph 12i

Intro Year:	1860	1910	1960	2010
Mail Railcar			Zorro Diesel 420 hp 60 mph 7i Replaced by Ruby	Ruby Diesel 600 hp 75 mph 8i

Intro Year:	1860	1910	1960	2010
Passenger Railcar General Purpose / Express (Joker)				Stratos Diesel 1200 hp 75 mph 16i

Intro Year:	1860	1910	1960	2010
Passenger Driving Cab (Joker)				Driving Trailer 75 mph 4i
Passenger Driving Cab (Joker)				Panoramic Driving Trailer 75 mph 4i

Metro

Metro Trains

pax, mail, valuables, food and similar town cargos
for very busy routes in and around large cities
- metro trains have very high capacity and relatively high run costs
- to be profitable, metro needs to be used on routes with short distances between stations, and very high loadings
can be used in stations as small as 1 tile
metro trains can be combined as needed

Intro Year:	1900	1950	2000
Passenger Very High Capacity Urban	Serpentine Metro 550 hp 45 mph 12i Replaced by Westbourne	Westbourne Metro 850 hp 55 mph 15i Replaced by Fleet	Fleet Metro 1050 hp 65 mph 16i
Passenger Very High Capacity Urban (Joker)	Poplar Metro 600 hp 45 mph 13i Replaced by Hammersmith	Hammersmith Metro 900 hp 55 mph 16i Replaced by Canary	Canary Metro 1100 hp 65 mph 16i
Mail Very High Capacity Urban	Longwater Metro 550 hp 45 mph 12i Replaced by Tyburn	Tyburn Metro 850 hp 55 mph 15i Replaced by Tideway	Tideway Metro 1050 hp 65 mph 16i
Mail Very High Capacity Urban (Joker)	Ravensbourne Metro 600 hp 45 mph 13i Replaced by Wandle	Wandle Metro 900 hp 55 mph 16i Replaced by Bankside	Bankside Metro 1100 hp 65 mph 16i
Very High Capacity Urban (Joker)	Debden Metro 600 hp 45 mph 13i Replaced by Cringle	Cringle Metro 900 hp 55 mph 16i Replaced by Mulberry	Mulberry Metro 1200 hp 65 mph 18i
Very High Capacity Urban (Joker)	Walbrook Metro 650 hp 45 mph 14i Replaced by Borax	Borax Metro 950 hp 55 mph 17i Replaced by Angerstein	Angerstein Metro 1250 hp 65 mph 19i