Final answer:
Rumble strips are placed on roadways to alert drivers of upcoming tollbooths or traffic changes, which signal drivers to prepare to stop or slow down. They are part of road safety measures that address issues such as high traffic volume, speeding, and pedestrian safety.
Step-by-step explanation:
Rumble strips are placed across the roadway to alert drivers primarily of upcoming tollbooth stations or significant traffic changes such as the end of a high-speed section of roadway, or approach to a stop sign or signal. These tactile and auditory warning systems serve as an effective means to capture the attention of drivers, potentially reducing speed-related accidents.
When a vehicle's wheels pass over these strips, they create a rumbling sound and vibration which immediately notify the driver to be cautious and prepare to stop or slow down.
The installation of rumble strips is a reflection of the increasing traffic volume, speeding concerns, and pedestrian safety issues. High traffic areas like intersections near manufacturing plants, strip malls, colleges, or event venues especially benefit from additional road safety measures.
For instance, additional traffic control devices, such as traffic signals, are installed to regulate traffic flow, enhance pedestrian crossing safety, and reduce the frequency and severity of traffic accidents, some of which have led to fatalities.