Match the following speeds with their definitions.Speed Definition 1. Spot speed A. The average speed maintained by a vehicle over a particular stretch of a road 2. Running speed B. The effective speed with which a vehicle traverses a particular route between two terminals 3. Overall speed C. The average speed of a vehicle in a certain road length at any time 4. Space-mean speed D. The instantaneous speed of a vehicle at a specified location or section
1-D, 2-A, 3-B ,4-C
Understanding Traffic Speed Definitions
This question requires matching different types of traffic speeds with their correct definitions. Understanding these distinctions is crucial in traffic engineering for analyzing road performance and safety.
Matching Traffic Speeds and Definitions
| Speed Type | Definition | Correct Match |
|---|---|---|
| 1. Spot speed | D. The instantaneous speed of a vehicle at a specified location or section | 1-D |
| 2. Running speed | A. The average speed maintained by a vehicle over a particular stretch of a road | 2-A |
| 3. Overall speed | B. The effective speed with which a vehicle traverses a particular route between two terminals | 3-B |
| 4. Space-mean speed | C. The average speed of a vehicle in a certain road length at any time | 4-C |
Explanation of Speed Definitions
- Spot Speed: This refers to the instantaneous speed of a vehicle at a particular moment as it passes a specific point or section on the road. It's like a snapshot of the vehicle's speed at that exact location. This aligns with definition D.
- Running Speed: This is the average speed a vehicle maintains over a specific segment of the road while it is in motion. It typically excludes delays caused by stops, such as at traffic signals or congestion. This matches definition A.
- Overall Speed: This represents the average speed achieved over an entire journey between a starting point and an ending point. It considers all factors, including travel time, stops, and delays encountered along the route. This corresponds to definition B.
- Space-mean speed: This is the average speed of all vehicles moving past specific points along a given length of roadway at a particular instant in time. It's calculated based on the average speed over a spatial segment rather than a time segment. This aligns with definition C.
Therefore, the correct matching is 1-D, 2-A, 3-B, and 4-C, which corresponds to the first option provided.
Important Questions from Traffic Engineering
The minimum value of 15 minute peak hour factor on a section of a road is
In railways, the disc signals are provided for the purpose of
PIEV represents -
In which type of transportation survey, the vehicles are stopped on a sampling basis and information is collected on the type of vehicle, origin, destination, trip purpose, etc?
In which type of traffic signal system do signals along a given road shows the same indication (green, red, etc.) at the same time?
