3M

Some really random text about 3M's traffic division here. (Also, be sure to reference that they made a bi-modal, time-programmable sign, too!)

Products:

PV Signals
Vehicle Signals (12")
M-123 Programmable Visibility Prototype Signal
M-131 Programmable Visibility Signal ^{Wiki Page}
M-131R Bimodal Ball/Arrow Signal
M-133 Dual-Indication Green/Yellow Signal

Pedestrian Signals (12")
M-131 Programmable Visibility Pedestrian Signal
M-132 Dynamic Pedestrian Signal

PV Signal Adapters/Converters
Vehicle Signal Adapter Attachments
SA-130 8" PV Adapter

Vehicle Signal Converter System
M-150 12" PV Lens/Reflector System

Signal Enlargers

Vehicle Signal ⇨ Vehicle Signal
SA-812R; SA-812G; SA-812GA (8" ⇨ 12" R, G, GA)
SA-810GA (8" ⇨ 8x12" GA)

Vehicle Signal ⇨ Pedestrian Signal
SA-812DW (8" Vehicle ⇨ 12" 'Dont Walk')
SA-810W (8" Vehicle ⇨ 8x12" 'Walk')

Pedestrian Signal ⇨ Pedestrian Signal
SA-912DW (9" ⇨ 12" 'Dont Walk')
SA-910W (9" ⇨ 8x12" 'Walk')

Other

Opticom