# 3.3 Making a traffic regulator

 Page 1 / 2

TECHNOLOGY

## Making a traffic regulator

To the Educator: This assignment can be executed as an individual or as a group project.

(a) What is the problem? You are a citizen of Muddle Town. The town traffic is always chaotic because drivers do not stop their vehicles at the main street crossing. Everyone is permanently late for work because of the frequent accidents and regular congestion of traffic at this important street intersection.

(b) What is required? A “machine” that will regulate the traffic in a reasonable way from day to day.

1. What is your brief? You are asked to design and build a prototype machine that can be erected at the street intersection to regulate the traffic.

(d) What limitations are placed on your prototype? You may use: 3 light bulbs of different colours (LED’s) as resistors; a battery as energy source and a container for the battery; lengths of copper wire with clamps as conductors; a wooden board; 4 drawing pins; and a paper clip as the switch.

Only one light may glow at any particular time. The lights must indicate to motorists that vehicles in one traffic lane have to stop while vehicles in another lane may continue travelling. One of these machines will be erected on each of the corners at the intersection, but you need to build only one.

You may present the machine in any form, but it may not be higher than 30 cm and wider than 20 cm. It must be solid, stable and strong.

## Research

Consult different sources and suggest at least three solutions for this problem. Draw sketches of these solutions or write notes about the possibilities that you are suggesting.

## Design

1. Make free-hand drawings of three circuits that could provide solutions to the traffic problem. Also provide labels.

Draw the circuit diagram of your final choice.

[LO 1.6]

SUGGESTION !

• Must the lights be connected in serial or in parallel if they need to work one at a time?
• What must be shifted to a different position so that only one light will light up at a time?
• Design a stand on which the lights, switch and battery can be mounted for the machine to work. This machine will eventually be controlled automatically, but someone will have to be employed to operate the changing of the lights, in the mean time. Discuss the requirements for such a stand with the members of your group. Indicate the dimensions so that it will be possible for other people to understand your ideas and how the machine works.

[LO 1.5]

## Manufacturing

1. Build the stand for the circuit. What materials will you be using?
2. Which tools will you be using?
3. Which action will you be taking – give a step by step explanation of what you will do:

[LO 1.8]

1. Mount the circuit on the stand.
2. Demonstrate your invention to the rest of the class and explain how it works.
3. Provide a suitable name for your invention.

[LO 1.7]

## [lo 1.10]

Evaluation

what does nano mean?
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
it is a goid question and i want to know the answer as well
Maciej
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
what is fullerene does it is used to make bukky balls
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
for screen printed electrodes ?
SUYASH
What is lattice structure?
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
what's the easiest and fastest way to the synthesize AgNP?
China
Cied
types of nano material
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
what is nano technology
what is system testing?
preparation of nanomaterial
how did you get the value of 2000N.What calculations are needed to arrive at it
Privacy Information Security Software Version 1.1a
Good
Berger describes sociologists as concerned with
Got questions? Join the online conversation and get instant answers!