Street Survival - Advanced Defensive Driving



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A ramp, on-ramp, or entrance ramp, is like a fork in reverse. For our purposes we will define a ramp as any side road that flows into the mainstream of traffic at an acute (non 90° angle).

The purpose of an on-ramp is to merge a free flow of traffic, as opposed to a fork which diverges the traffic.

This poses even more of a danger point than a fork. We look at scenarios that give rise to these dangers.

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Dangers Lane Ramp

From on-ramp

Study the identifying marks of where things can go wrong with vehicles merging from an on-ramp.

Into on-ramp

This section looks at the risks where vehicles from the main lane enter the merging lane of an on-ramp.

☠️ Dangers associated with road ramps

Road ramps can be dangerous if not approached and navigated carefully. Here are some of the dangers associated with road ramps:

  • High speed: Road ramps are designed to help drivers merge onto highways or freeways, which means that the speed on the ramp is often much higher than on regular roads. High speed can lead to loss of control and accidents, especially if the driver is not experienced or familiar with the ramp.

  • Limited visibility: Road ramps can have limited visibility, especially when approaching a curve or an intersection. This can make it difficult for drivers to see other vehicles, pedestrians, or obstacles on the road, increasing the risk of accidents.

  • Merge conflicts: When merging onto a highway or freeway, there can be a conflict between the merging vehicle and the traffic already on the road. If the merging driver does not yield or accelerate quickly enough, it can lead to a collision.

  • Sharp curves: Some road ramps have sharp curves, which can be challenging for drivers to navigate, especially if they are not familiar with the ramp. Drivers who take a curve too fast or underestimate the curve's sharpness can lose control and cause an accident.

  • Weather conditions: Adverse weather conditions such as rain, snow, or ice can make road ramps even more dangerous. The slippery surface can reduce traction, making it harder for drivers to control their vehicles, especially at high speeds.

To stay safe on road ramps, drivers should approach them with caution, reduce their speed, use their turn signals, and be aware of other drivers and potential hazards on the road.

What are expressway entrance ramps used for?

Expressway entrance ramps, also known as on-ramps or entrance lanes, are designed to allow vehicles to enter the expressway safely and smoothly. Their primary purpose is to provide a controlled merging area for vehicles to transition from local streets or highways onto the faster-moving traffic of the expressway.

Here are the main functions and purposes of expressway entrance ramps:

  • Acceleration: Entrance ramps provide a length of roadway where drivers can accelerate their vehicles to match the speed of the traffic on the expressway. This allows for a smoother merging process and reduces the risk of collisions.

  • Merging: Once vehicles have reached an appropriate speed on the entrance ramp, they must merge into the main flow of traffic on the expressway. The merging process involves finding gaps in the traffic and smoothly entering the designated lane.

  • Traffic Control: Entrance ramps often have traffic control devices, such as yield signs or traffic signals, to regulate the flow of vehicles onto the expressway. These devices help ensure a safe and orderly merging process, especially during peak traffic hours.

  • Safety: Entrance ramps are designed to enhance safety by providing a dedicated area for vehicles to enter the expressway. Proper design, signage, and visibility are important aspects of ramp construction to minimize potential hazards.

Overall, expressway entrance ramps facilitate the safe and efficient movement of vehicles onto the expressway, ensuring a smooth transition between local streets or highways and the high-speed expressway environment.

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Street Survival - Advanced Defensive Driving