What are the types of highway sight distance?

1 Answers
McJune
07/29/25 1:04pm
Highway sight distance types include stopping sight distance, overtaking sight distance, meeting sight distance, and passing sight distance. Introduction to stopping sight distance: The minimum distance required for a vehicle to come to a safe stop after the driver sees an obstacle ahead while driving. Introduction to meeting sight distance: On the same lane when two opposing vehicles meet, the minimum distance required from the moment they spot each other until both apply brakes to come to a safe stop simultaneously. Introduction to passing sight distance: On two-lane roads without clearly marked lane dividers, the minimum distance required for two opposing vehicles to safely pass each other after spotting each other and taking appropriate deceleration/avoidance measures.
Was this review help?
18
2
Share
More Forum Discussions

Detailed Explanation of the 16 Items in the A1 Subject 2 Driving Test?

According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," the A1 Subject 2 driving test includes 16 items: reverse parking into a garage, hill start and stop, parallel parking, mountain road simulation, right-angle turns, rain and fog weather simulation, narrow gate, bumpy road, single-plank bridge, narrow road U-turn, driving over "big biscuits," curve driving, highway simulation test, highway emergency handling, highway tire blowout, and tunnel simulation driving. The specific details are as follows: Reverse Parking into a Garage: From the starting point, reverse into Garage B and stop correctly. Then, move the vehicle twice forward and twice backward to Garage A and stop correctly. Proceed forward to exit Garage B to the control line, reverse into Garage A and stop correctly, then return to the starting point. The vehicle must not stop during the process, and the total time must not exceed 8 minutes. Parallel Parking: After parking the vehicle on the right side in front of the garage, reverse into the garage in one go without stopping. The wheels must not touch or cross the lane or garage boundary lines. Single-Plank Bridge: During the test, the vehicle must not stop, and the wheels must not fall off the bridge. Narrow Road U-turn: The vehicle must park on the right side of the U-turn section and complete the U-turn in no more than three forward and two backward movements. The test time must not exceed 5 minutes. Driving Over Continuous Obstacles: The vehicle must use second gear or higher to pass over the "big biscuits" without touching, rubbing, or running over them. The wheels must not cross the road edges, and the vehicle must not stop during the process. Right-Angle Turns: The vehicle must follow the designated route and complete a right-angle turn (left or right) in one go without stopping or touching the lane boundary lines. Hill Start and Stop: The vehicle must stop accurately and start smoothly without rolling back. The starting time must not exceed 30 seconds. Highway Simulation: After entering the highway via the ramp, turn on the left turn signal, check for oncoming traffic, and accelerate to the minimum speed limit before merging into the lane. Turn off the turn signal after merging. When changing lanes, turn on the turn signal for the intended lane, check for traffic, and change lanes safely. When exiting the highway, adjust speed and lane position in advance based on exit signs. Curve Driving (S-Turn): Also known as the S-curve, this is one of the easier items in Subject 2. The test road is 3.5 meters wide with a radius of 7.5 meters. The vehicle must not touch the road edges, and steering must be smooth. Emergency Handling Simulation: During normal driving, one of the following emergencies will be randomly simulated using voice or lights: If an obstacle suddenly appears, brake immediately, stop quickly, and turn on the hazard lights. In case of a tire blowout or other vehicle malfunction on the highway, slow down safely, check for following traffic, stop smoothly in the emergency lane, turn on hazard lights, instruct passengers to move behind the guardrail, place warning signs correctly, and simulate calling for help. Tunnel Simulation: Before entering the tunnel, observe the traffic signs and follow the instructions. Slow down, turn on headlights, and honk when entering the tunnel. Honk again and turn off headlights when exiting. Do not honk in no-honking zones. Rain/Fog Simulation: Slow down and adjust wiper speed based on rain intensity. In fog, turn on fog lights, position lights, headlights, and hazard lights. Wet Road Simulation: Slow down before entering the wet road section, then use low gear to drive steadily through without stopping. Mountain Road Simulation: Slow down before sharp turns, drive on the right side, honk before entering the turn, and avoid crossing into the opposite lane. Bumpy Road: Slow down before the bumpy road section and pass through slowly without stopping. Narrow Gate: The vehicle must pass through three gates at a speed of at least 10 km/h without touching the hanging poles.
9
5
Share

What are the exterior dimensions of the Avancier?

The Avancier measures 4816mm in length, 1942mm in width, 1669mm in height, with a wheelbase of 2820mm. The Avancier is a large luxury SUV launched by GAC Honda, featuring a spacious and luxurious interior space with high-end value that surpasses its peers. The Avancier is equipped with a powertrain consisting of a 2.0T turbocharged engine and a 9AT transmission, delivering a maximum power of 200kW and a maximum torque of 370Nm, providing strong high-power output while achieving excellent fuel economy. Additionally, the Avancier features an ANC active noise cancellation system, which, through noise reduction designs for the engine, body, and even the wheels, achieves a quiet performance comparable to luxury vehicles.
6
0
Share

What is the function of ABS in a car?

ABS in a car stands for Anti-lock Braking System. During braking, it automatically controls the braking force to prevent the wheels from locking up, keeping them in a state of rolling and sliding (with a slip ratio of around 20%). This ensures maximum traction between the wheels and the road surface. The ABS system helps avoid loss of steering control and wheel skidding during emergency braking by preventing the wheels from locking up. It prevents the tires from rubbing against the ground at a single point, thereby increasing friction and achieving a braking efficiency of over 90%. Additionally, it reduces brake wear and extends the service life of brake drums, discs, and tires by up to twice as long.
9
4
Share

Where Does the Water Leakage from the Co-Driver's Floor Mat Come From?

Water leakage under the co-driver's floor mat could originate from the following sources: 1. Leakage from the cabin floor drain plug; 2. Leakage from the sunroof drainage pipe; 3. Leakage from the door; 4. Leakage of antifreeze from the heater core; 5. Damage or improper installation of the air conditioning drainage pipe; 6. Sunroof leakage due to poor sealing; 7. Corrosion leakage from the interior heater. Here are the solutions: 1. Check the drainage outlets: Inspect the drainage holes of the sunroof, doors, and air conditioning for blockages. If blocked, clean them thoroughly and drain the accumulated water; 2. Check the sealing: Examine the sealing rubber rings and strips of the sunroof and doors for deformation or aging. If found, replace the rubber components.
5
0
Share

How to Turn Off the Engine Auto Start-Stop Function in Volkswagen Teramont?

Method to turn off the engine auto start-stop function in Volkswagen Teramont: Simply press the auto start-stop button, and the dashboard will display a system-off prompt. To reactivate this function, press the button again. The auto start-stop system automatically shuts off the engine when the vehicle comes to a temporary stop during driving and restarts it when it's time to move forward. The Volkswagen Teramont is a mid-to-large-sized SUV under SAIC Volkswagen, with dimensions of 5039mm in length, 1989mm in width, and 1773mm in height, and a wheelbase of 2980mm. In terms of power, the Volkswagen Teramont is equipped with a turbocharged engine that delivers a maximum horsepower of 186hp, a maximum torque of 320Nm, and a maximum power output of 137kW.
5
0
Share

Has the 100-meter gear shifting exercise in Subject 3 been canceled?

Subject 3 test does not cancel the gear shifting exercise. The 100-meter gear shifting exercise in Subject 3 assesses the driver's proficiency in vehicle gear control. The vehicle starts from the 100-meter starting line and must complete the acceleration process from the lowest gear to the highest gear within 100 meters, as well as the deceleration process from the highest gear back to the second gear, with smooth transitions throughout. Below are some tips for the Subject 3 gear shifting test: 1. When shifting gears, the clutch must be fully depressed before changing gears, and the speed must meet the requirements of the corresponding gear; 2. When upshifting, shift gears step by step, while downshifting can be done directly; 3. Keep your eyes on the road when shifting gears and avoid looking at the gear lever; 4. Gear shifting must be quick and accurate.
14
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.