WorksheetsThe First Traffic Light
Total questions: 9
Worksheet time: 9mins
The first traffic light was installed in
1814 in Paris
1868 in London
1862 in New York.
The lights were
gas-powered
electricity-powered
wind-powered
The first electric traffic lights were operated manually from a
in the street
from police stations
from a control booth
A traffic light is most commonly a(n) ____________ system.
adaptive
timer-based
sensor-based
Traffic engineers adjust the timing based on __________.
size of the road
speed of the vehicles
number of vehicles
Yellow lights need to last _________ on faster roadways.
shorter
longer
Actuated signals can ____________ and use that information to make real-time decisions about light timing and sequence.
send information to sensors
receive information from sensors
detect sensors in vehicles
The sensors feed data to a computer that chooses the timing of the light changes in order to ____________.
make the traffic safe
boost the speed of the traffic
ease the traffic flow
With self-driving cars becoming ever more popular _____________ .
the need for traffic lights might be completely eliminated
we need more actuated signals
traffic engineers must develop intelligent sensors for traffic lights
