Texas Driver's License Knowledge TestTraffic Signs and SignalsHard
A driver is preparing to exit a freeway and moves into the deceleration lane. They observe a series of short, thicker white lines painted across the lane, spaced at decreasing intervals as they approach the exit ramp. What do these markings signify?
- AThey indicate that the driver should maintain their current speed.
- BThey are rumble strips designed to alert drowsy drivers.
- CThey mark the beginning of a construction zone.
- DThey are speed advisory markings, suggesting a reduced speed is necessary.
Show answer & explanationAnswer & explanation
Correct answer: D. They are speed advisory markings, suggesting a reduced speed is necessary.
These markings are known as optical speed bars or transverse rumble strips (when raised). Their decreasing interval creates an optical illusion that the vehicle is accelerating, prompting the driver to reduce speed as they approach a curve or exit ramp.
Why the other options are wrong
- A. This is incorrect; the purpose is to encourage speed reduction.
- B. While some rumble strips alert drowsy drivers, these specific patterns are for speed perception.
- C. Construction zones are indicated by orange signs and different pavement markings.
Optical Speed Bars / Transverse Rumble Strips
Pavement markings (often white lines or raised strips) spaced at decreasing intervals to create an optical illusion of increased speed, prompting drivers to slow down.
- Used to encourage speed reduction.
- Found on exit ramps, curves, or hazardous areas.
- Create a visual and sometimes tactile alert.
Memory trick: Lines getting closer, 'Look, slow down, don't be a speed cruiser'.