Medians ” raised barriers in the center portion of the street or roadway are appropriate in some locations and not appropriate in others. They are a pedestrian benefit, because they can serve as a place of refuge for pedestrians who cross a street midblock or at intersections.

What is the purpose of broken dotted white lines?

White lane markings are the most common. Solid white lines define lanes of traffic going in the same direction, or they show you the location of the shoulder of the road. Broken or “dotted” white lines are used to show the center line between lanes. Yellow lines show you where traffic is going in different directions.

What is a highway divider called?

The Jersey Barrier ” also known as a Jersey Curb, K-rail, or Jersey Wall ” refers to the barricades you see along the center and sides of highways, at construction sites, in parking lots, and pretty much anywhere traffic is being directed.

What are the yellow bumps on the road called?

Nonreflective raised pavement markers (also known as Botts’ dots) are usually round, are white or yellow, and are frequently used on highways and interstates in lieu of painted lines.

What are the metal things on the side of the highway called?

Traffic barriers (sometimes called Armco barriers, also known in North America as guardrails or guard rails and in Britain as crash barriers) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large …

What is the middle of the street called?

The median strip or central reservation is the reserved area that separates opposing lanes of traffic on divided roadways, such as divided highways, dual carriageways, freeways, and motorways. The term also applies to divided roadways other than highways, such as some major streets in urban or suburban areas.

What is the median on a highway?

A median is the portion of the roadway separating opposing directions of the roadway, or local lanes from through travel lanes. … Medians are generally linear and continuous through a block. An island is defined as an area between traffic lanes used for control of traffic movements.

What lines can you cross when driving?

Solid White Line

What is a reliable way to know when another vehicle is passing you?

Remember to look over your right shoulder to check your blind spot, and be sure to signal. If another vehicle begins to pass you, stay in your lane and do not increase your speed. If many vehicles are passing you in the right lane of a multi- lane roadway, you are probably going slower than the rest of the traffic.

What is double lane rule?

Driving in the Cities:

As a general rule as you move to the right side of the road, the speed you should be maintaining increases. So the leftmost side of the road is only for slow moving traffic. In the cities, you are mostly going to witness 2-lane roads.

What are the bumps on the corner of the sidewalk for?

Those blister-like bumps, also known as “truncated domes and detectible warning pavers,” are a part of “tactile paving” (meaning: paving that can be felt). It helps the visually impaired detect when they are about to leave the sidewalk and enter the street.

What are the bumps on side of road?

Rumble strips (also known as sleeper lines or alert strips) are a road safety feature to alert inattentive drivers of potential danger, by causing a tactile vibration and audible rumbling transmitted through the wheels into the vehicle interior.

What are the yellow bumps?

Those blister-like bumps, also known as truncated domes and detectible warning pavers, are a part of tactile paving ” paving that can be felt. It helps visually impaired pedestrians detect when they are about to leave the sidewalk and enter the street. These ground indicators are also sometimes known as Braille paving.

Do rumble strips damage cars?

Rumble strips can damage your tires and suspension but you would have to drive on a rumble strip for several hundred miles on a regular basis in order to see that happen. … Experts even agree that crossing a rumble strip in an intended manner will not damage your vehicle.

Who invented the bumps on the side of the road?

Named after Elbert Dysart Botts, the Caltrans engineer credited with the 1950s research that led to their creation, the dots spread across the nation as a way to stripe lanes. The dots later become known for a different benefit: The powerful feedback when driving over them that could snap awake sleepy motorists.

How do highway guardrails work?

Its function is always to redirect the vehicle back onto the roadway. … When hit head-on, the impact head slides down the guardrail flattening, or extruding, the guardrail and redirecting the guardrail away from the vehicle until the vehicle’s impact energy is dissipated and the vehicle has decelerated to a stop.