1. FDOT’s Motorist Awareness System

2. When to use MAS? (All conditions must be met)
Multilane facility
Posted speed limit is 55 mph or greater
Work operation requires a lane closure
Workers are present

3. What Devices are used? WORKERS PRESENT AHEAD SPEED REDUCED NEXT 3MI
Changeable Message Sign notifies motorist of speed reduction
WORKERS
PRESENT
AHEAD
SPEED
REDUCED
NEXT 3MI
SPEED
REDUCED
NEXT 3MI
WORKERS
PRESENT
AHEAD

4. Where to place CMS devices
1000’

5. What devices are used?
Portable
Regulatory
Sign
(PRS)

6. Where to place PRS devices
500’

7. What devices are used?
Radar
Speed
Display
Unit
(RSDU) 60 5 9

8. Where to place RSDU devices
500’

9. Motorist Awareness System
Speed and law enforcement officers are used randomly to enforce the reduced speed in the work zone

10. Where to get more information
FDOT Design Standard Index 670:
State Construction Office:
Contact: Stefanie D. Maxwell, P.E.