Advanced Math/Traffic Lights.
Dear Prof Randy
In the typical sequence of color phases:
Green Light : Illumination of the green light allows traffic to proceed in the direction denoted, if it is safe to do so
Orange Light : Illumination of the orange/amber light denoting prepare to stop short of the intersection, if it is safe to do so
Red Light : Illumination of the red signal prohibits any traffic from proceeding
Can a Single 7 Segment LED Display be used as an alternative
to the above three traffic lights with modifications in the control circuit ?
0 Indicates Stop -> Similar to Red Light.
1 Indicates Stop Short Of -> Similar to Orange Light.
2 Indicates Proceed -> Similar to Green Light.
i.e. Instead of three light signals (three LED for each color red,orange and green) use of
a Single 7 Segment LED Display (indicates Number instead of colors) as source of Traffic Lights.
What are the Pros and Cons if this can be achieved ?
Do you feel showing Human Being Symbols (Red and Green Color)
would be a Bottleneck in the Single 7 Segment LED Display ?
In that Case Number 8 for Human Being Walk Stop Symbol and Number 9 for Human Being Walk Start Symbol can be used ?
The Single 7 Segment LED Color could be Blue or White with a Black
Note : The Circle Color Shape is replace with a Rectangle (7 Segment LED) Shape for this Traffic Light.
Awaiting your reply,
Thanks & Regards,
Prashant S Akerkar
My first impression is that changing from 3 colors to 0,1,2 would make it a little harder for drivers to respond, at least in the beginning. This, of course, is a negative attribute. My reasoning for this is simply that responding to a color requires less "cognitive processing" than interpreting a number. Neoroscinece is not my area of expertise so my reasoning is not properly informed, i.e., its just an opinion.
On the other hand, the 7 degress-of-freedom in the display could offer more information, as in your example of walk/don't walk. Note however, note that walk/don't walk symbols already exist using displays with more than 7 segnents.
Is there a reason to stick with 7-segment displays? cost, availability,...? If there is no compelling reason then i don't see an advantage overall to using a 7-segment display.