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
1-D, 2-A, 3-B ,4-C
2
1-D, 2-C ,3-B, 4-A
3
1-B, 2-A, 3-C, 4-D
4
1-C, 2-A, 3-B, 4-D