9723-1

Cities and Transportation

Set number: 9723-1
Year: 2000
Theme: Mindstorms
Parts: 394
Minifigures: 0

Building instructions

The building instructions are on the official LEGO website. We do not host any instructions ourselves; the link below takes you to the official page.

View building instructions on LEGO.com (opens an external website)This set on Rebrickable (opens an external website)

Parts list – 9723-1 Cities and Transportation

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120 lines, 400 pieces

Parts list of set 9723-1
Part	Name	Colour	Quantity	Note
30279pr0001	Baseplate 32 x 32 with 8-Stud Straight with Road PrintBaseplates	Green	1×
3004	Brick 1 x 2Bricks	Black	4×
3065	Brick 1 x 2 without Bottom TubeBricks	Trans-Green	2×
3065	Brick 1 x 2 without Bottom TubeBricks	Trans-Red	2×
3065	Brick 1 x 2 without Bottom TubeBricks	Trans-Yellow	4×
3003	Brick 2 x 2Bricks	Black	4×
3941	Brick Round 2 x 2 with Axle HoleBricks Round and Cones	Black	8×
6035	Light Brick 1 x 2 with Single Side LightElectronics	White	4×
2983	Motor Pulley, 9V Micromotor with Axle HoleElectronics	Light Gray	4×
43362c01	Motor, 9V Mini [Lightweight New Style]Electronics	Black	1×
2982c01	Sensor, Light with Fixed CableElectronics	Blue	2×
879	Sensor, TouchElectronics	Light Gray	2×
5306bc020	Wire with Brick 2 x 2 x 2/3 Pair, 20LElectronics	Black	2×
5306bc026	Wire with Brick 2 x 2 x 2/3 Pair, 26LElectronics	Yellow	3×
5306bc036	Wire with Brick 2 x 2 x 2/3 Pair, 36LElectronics	Black	2×
5306bc378	Wire with Brick 2 x 2 x 2/3 Pair, 378LElectronics	Black	1×
5306bc069	Wire with Brick 2 x 2 x 2/3 Pair, 69LElectronics	Black	1×
9723b1	Activity Booklet 1 - Simple Traffic Lights - Set 9723Gear Parts	[No Color/Any Color]	1×
9723b2	Activity Booklet 2 - Traffic Monitoring - Set 9723Gear Parts	[No Color/Any Color]	1×
9723b3	Activity Booklet 3 - Intelligent Vehicles - Set 9723Gear Parts	[No Color/Any Color]	1×
9723b4	Activity Booklet 4 - Monorail - Set 9723Gear Parts	[No Color/Any Color]	1×
4125890	Storage / Sorting Tray, Dacta, 29 Compartment for Dacta Small BinGear Parts	Trans-Clear	1×
71082	Storage Bin Lid, Dacta, 19 x 24Gear Parts	Trans-Clear	1×
upn0032	Storage Bin, Dacta, SmallGear Parts	Black	1×
3626bpr0001	Minifig Head Standard Grin Print [Blocked Open Stud]Minifig Heads	Yellow	2×
3626bpr0006	Minifig Head, Black Sunglasses and Standard Grin Print [Blocked Open Stud]Minifig Heads	Yellow	1×
3626bpr0009	Minifig Head, Freckle Nose and Standard Grin Print [Blocked Open Stud]Minifig Heads	Yellow	1×
4530	Hair Center PartingMinifig Headwear	Black	1×
4530	Hair Center PartingMinifig Headwear	Brown	1×
3901	Hair SmoothMinifig Headwear	Black	1×
4485	Hat / Cap Long Peak [Plain]Minifig Headwear	Blue	1×
970c03	Hips and Black LegsMinifig Lower Body	Black	1×
970c28	Hips and Blue LegsMinifig Lower Body	Blue	1×
970c22	Hips and Red LegsMinifig Lower Body	Red	1×
970c27	Hips and White LegsMinifig Lower Body	White	1×
973c28h01pr1245	Torso, Jacket with Zipper and 3 Pockets Print, Blue Arms, Yellow HandsMinifig Upper Body	Blue	1×
973c27h01pr0130	Torso, Octan Logo Print, White Arms, Yellow HandsMinifig Upper Body	White	1×
973c27h01pr0017	Torso, Palm Tree Print, White Arms, Yellow HandsMinifig Upper Body	White	1×
973c22h01	Torso, Red Arms, Yellow Hands [Plain]Minifig Upper Body	Red	1×
4477	Plate 1 x 10Plates	Yellow	4×
3023	Plate 1 x 2Plates	Yellow	16×
3623	Plate 1 x 3Plates	Yellow	8×
3710	Plate 1 x 4Plates	Yellow	8×
3666	Plate 1 x 6Plates	Yellow	4×
3460	Plate 1 x 8Plates	Yellow	4×
3022	Plate 2 x 2Plates	Yellow	4×
3021	Plate 2 x 3Plates	Yellow	4×
3031	Plate 4 x 4Plates	Yellow	2×
3032	Plate 4 x 6Plates	Yellow	2×
3033	Plate 6 x 10Plates	Yellow	2×
2654	Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Plates Round Curved and Dishes	Black	2×
3956	Bracket 2 x 2 - 2 x 2Plates Special	Black	2×
3709	Technic Plate 2 x 4 [3 Holes]Plates Special	Yellow	8×
32001	Technic Plate 2 x 6 [5 Holes]Plates Special	Yellow	2×
3738	Technic Plate 2 x 8 [7 Holes]Plates Special	Yellow	4×
4230879	Sticker Sheet for Storage Bin with Set 9723-1Stickers	[No Color/Any Color]	1×
71509	Rubber Band Small 13mm (Square Cross Section)String, Bands and Reels	Black	4×
85544	Technic Rubber Belt Medium [24mm ID] [Round Cross Section]String, Bands and Reels	Red	2×
3737	Technic Axle 10Technic Axles	Black	2×
3708	Technic Axle 12Technic Axles	Black	2×
32062	Technic Axle 2 NotchedTechnic Axles	Black	4×
4519	Technic Axle 3Technic Axles	Black	2×
6587	Technic Axle 3 with StudTechnic Axles	Dark Gray	2×
3705	Technic Axle 4Technic Axles	Black	2×
32073	Technic Axle 5Technic Axles	Black	2×
3706	Technic Axle 6Technic Axles	Black	2×
3707	Technic Axle 8Technic Axles	Black	2×
32009	Technic Beam 1 x 11.5 Double Bent ThickTechnic Beams	Yellow	4×
6632	Technic Beam 1 x 3 ThinTechnic Beams	Light Gray	2×
32017	Technic Beam 1 x 5 ThinTechnic Beams	Light Gray	4×
2730	Technic Brick 1 x 10 [9 Pin Holes]Technic Bricks	Black	4×
3895	Technic Brick 1 x 12 [11 Pin Holes]Technic Bricks	Black	4×
3703	Technic Brick 1 x 16 [15 Pin Holes]Technic Bricks	Black	5×
3700	Technic Brick 1 x 2 [1 Pin Hole]Technic Bricks	Black	16×
32064b	Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]Technic Bricks	Green	4×
3701	Technic Brick 1 x 4 [3 Pin Holes]Technic Bricks	Black	8×
3894	Technic Brick 1 x 6 [5 Pin Holes]Technic Bricks	Black	4×
3702	Technic Brick 1 x 8 [7 Pin Holes]Technic Bricks	Black	4×
3713	Technic BushTechnic Bushes	Light Gray	20×
32123a	Technic Bush 1/2 Smooth with Axle Hole ReducedTechnic Bushes	Light Gray	4×
6538b	Technic Axle Connector Ridged [with x Hole x Orientation]Technic Connectors	Light Gray	2×
32013	Technic Axle and Pin Connector Angled #1Technic Connectors	Blue	4×
32034	Technic Axle and Pin Connector Angled #2 - 180°Technic Connectors	Light Gray	2×
32015	Technic Axle and Pin Connector Angled #5 - 112.5°Technic Connectors	Light Gray	2×
6536	Technic Axle and Pin Connector PerpendicularTechnic Connectors	Light Gray	2×
32068	Technic Axle and Pin Connector Perpendicular 3L with Pin HoleTechnic Connectors	Light Gray	2×
75535	Technic Pin Connector Round [No Slot]Technic Connectors	Yellow	2×
6589	Technic Gear 12 Tooth BevelTechnic Gears	Light Gray	9×
4019	Technic Gear 16 Tooth with Round Holes [Old Style]Technic Gears	Light Gray	4×
76019	Technic Gear 24 Tooth Clutch with Dark Gray or Light Gray CenterTechnic Gears	White	1×
3650c	Technic Gear 24 Tooth Crown with Reinforcements [New Style]Technic Gears	Light Gray	4×
3648b	Technic Gear 24 Tooth [New Style with Single Axle Hole]Technic Gears	Light Gray	4×
3647	Technic Gear 8 ToothTechnic Gears	Light Gray	6×
6573	Technic Gear Differential, 24 -16 Tooth with Clutch on Both SidesTechnic Gears	Dark Gray	1×
3743	Technic Gear Rack 1 x 4Technic Gears	Light Gray	4×
4716	Technic Worm GearTechnic Gears	Black	4×
3749	Technic Axle Pin without Friction Ridges LengthwiseTechnic Pins	Light Gray	8×
4274	Technic Pin 1/2 without Friction RidgesTechnic Pins	Light Gray	4×
32002	Technic Pin 3/4Technic Pins	Dark Gray	8×
2780	Technic Pin with Friction Ridges Lengthwise and Center SlotsTechnic Pins	Black	12×
3673	Technic Pin without Friction Ridges LengthwiseTechnic Pins	Light Gray	12×
6588	Technic Gearbox 2 x 4 x 3 1/3Technic Special	Yellow	1×
3069b	Tile 1 x 2 with GrooveTiles	Red	6×
3069b	Tile 1 x 2 with GrooveTiles	White	6×
75c18	Hose Rigid 3mm D. 18L / 14.4cmTubes and Hoses	Blue	2×
75c20	Hose Rigid 3mm D. 20L / 16cmTubes and Hoses	Blue	2×
2815	Technic Wedge Belt Wheel TireWheels and Tyres	Black	2×
4185	Technic Wedge Belt Wheel [aka Pulley]Wheels and Tyres	Light Gray	4×
2346	Tyre 30 x 10.5 Offset TreadWheels and Tyres	Black	2×
6578	Tyre 30.4 x 14 VRWheels and Tyres	Black	2×
3634	Tyre 43 x 11, 17 mm Inside DiameterWheels and Tyres	Black	2×
3483	Tyre Offset Tread 24 x 8Wheels and Tyres	Black	2×
2994	Wheel Rim 24 x 14 VR with Center Axle HoleWheels and Tyres	Yellow	2×
3482	Wheel with Split Axle HoleWheels and Tyres	Yellow	8×
41752	Rubber Band / Belt Holder 2 x 4 x 2 1/3String, Bands and Reels	Dark Gray	1×	Spare
3713	Technic BushTechnic Bushes	Light Gray	1×	Spare
32123a	Technic Bush 1/2 Smooth with Axle Hole ReducedTechnic Bushes	Light Gray	1×	Spare
4274	Technic Pin 1/2 without Friction RidgesTechnic Pins	Light Gray	1×	Spare
32002	Technic Pin 3/4Technic Pins	Dark Gray	1×	Spare
2780	Technic Pin with Friction Ridges Lengthwise and Center SlotsTechnic Pins	Black	1×	Spare