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Primary General Studies: Hong Kong Public Transport and Road Safety (Paper 3 (challenge))
Primary General Studies: Hong Kong Public Transport and Road Safety (Paper 3 (challenge))
This paper challenges analysis: blind spots, signal design, route average speed, capacity, percentage increases and average waiting time.
Direct answers In percentage questions state whether the denominator is the old price, the whole load or the whole cycle before calculating.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: Primary General Studies: Hong Kong Public Transport and Road Safety |
| Level | P5 |
02 Questions (10 items)
- FoundationWhich side of the road do Hong Kong vehicles use, and which way should you look first?
- FoundationWhy is there not a pedestrian light at every junction?
- FoundationWhat is a vehicle blind spot?
- IntermediateA bus route of 22 km takes 55 minutes of running time; what is the average speed?
- IntermediateA bus carries 120 passengers and runs every 10 minutes; what is the hourly capacity in passenger trips?
- IntermediateA fare rises from 12 dollars to 13.2 dollars; what is the increase?
- ChallengeA route runs 1 500 trips a day with 90 passengers each and three tenths pay by smart card; how many smart card trips?
- ChallengeEight buses leave in an hour; how long does a passenger arriving at random wait on average?
- ChallengeA pedestrian light cycle lasts 60 seconds with 24 seconds of green figure; what share of the cycle is green?
- Error redoWhen working out a fare increase, should the base be the new fare or the old fare?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Vehicles keep to the left, so look right first. | Where traffic keeps left, the nearest vehicles come from the right. |
| 2 | The choice depends on traffic and pedestrian flow; quiet junctions suit zebra crossings or refuge islands better. | Signals stop the traffic, which wastes time where flows are low. |
| 3 | The area a driver cannot see from the driving seat; blind spots are largest on big vehicles. | If the driver cannot see you, you are invisible, so never wait inside a blind spot. |
| 4 | 24 kilometres per hour. | 55 minutes is about 0.9167 hour, and 22 divided by 0.9167 is about 24. |
| 5 | 720 passenger trips. | Six buses leave in an hour, and 120 times 6 is 720. |
| 6 | Ten per cent. | 1.2 divided by 12 is 0.1, and the increase uses the old fare as the base. |
| 7 | 40 500 passenger trips. | 1 500 times 90 is 135 000, and three tenths of that is 40 500. |
| 8 | About 3.75 minutes. | The headway is 7.5 minutes and average waiting is about half of it. |
| 9 | Four tenths, that is 40 per cent. | 24 divided by 60 is 0.4. |
| 10 | The old fare. | Using the new fare as the base understates the increase. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Plan the route and check the timetable before setting out; always look right, left and right again before crossing; never start on a flashing green figure; check fares and times with a calculation.Tutor Registration →
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.