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Traffic lights - Coggle Diagram
Traffic lights
components
LED's
buzzer
Micro controller
The pole the traffic lights are on
bobbly bits on the floor to tell blind people there's a traffic light
inputs
press button for pedestrians
sensor to detect when people have finished crossing
sensor to detect cars
cost
instillation costs
production costs
disruption to traffic during install
output functions
Lights
Time for crossing
buzzer for crossing
environment
on a road
where people need to cross
sensible location- no blind bends
aesthetics
colour
black body
visible from any direction
safety
timed correctly to make sure traffic stops before crossing
safe to press button- sealed against weather
size
big enough to be seen
high lights for bridges