• Three aspect semaphore signals will be used to 'control' movement between the 16 control blocks. Each control run will start and end in the "Parking Lot". Movement in the parking lot will be controlled by dwarf signal (tri-color short LED) signals.
  • Based on the exit paths from each block, signals required:
    • 28 double headed semaphores,
    • 4 single headed semaphores and
    • 4 dwarf signal lights, one for each parking space.
  • The aspect of each signal is controlled by the Raspberry Pi (3).
  • Which aspect will be displayed is determined by the laptop (4).



Tomar Industries doule head 3-aspect semaphore #842

Tomar Industries Single head 3-aspect semaphore  #854

Tomar Industries Single head 3-aspect semaphore #853

Tomar Industries        

Double Headed Semaphore

# TMB842

Tomar Industries        

Single Headed Semaphore

# TMB854

Tomar Industries        

Single Headed Semaphore

# TMB853

 Tomar Industries, Dwarf signal light, # TRM850, for the "Parking Lot"Tomar Industries Dwarf 3-LED signal