S2 Geography | Hong Kong Transport Network: Public Transport, Road Congestion and Cross-Border Links

S2 Geography | Hong Kong Transport Network: Public Transport, Road Congestion and Cross-Border Links — Tutor Prep Guide

2026-11-15

Tutor lesson-prep guides · Junior Secondary Geography

Students ride public transport every day but cannot say why Hong Kong is unusual. This lesson builds the frame from three numbers: 12 million passenger trips a day, 1.6 trips per person, and 72.5% carried by rail plus buses, then turns to road load and cross-border links.

Objectives — Students can: (1) divide daily passenger trips by population to find trips per person and give two reasons why public transport dominates; (2) divide vehicles by road length to find road load and give three congestion measures with one limitation each; (3) divide distance by time to find high speed rail average speed and give two benefits and two costs of cross-border infrastructure.

01 Prerequisites (3-minute check)

If any of these fails, fix it before the lesson starts.

Skill	Quick check	Pass mark
Speed	A 140 km journey takes 2 hours. What is the average speed?	70 km per hour
Density	2,000 vehicles on 10 km of road is how many per kilometre?	200 per kilometre
Public transport	Name three public transport modes in Hong Kong.	MTR, franchised buses, minibuses, plus ferries, trams and taxis

02 Lesson flow (45 minutes)

Time	Stage	Tutor does	Student does
0-5 min	Start from daily life	Ask how many trips students made yesterday, then give 12 million trips a day	Say about two trips each
5-16 min	Trips per person	Model 12 million / 7.5 million, then give rail plus bus at 72.5%	Get 1.6 trips per person
16-27 min	Road load	Use 600,000 vehicles over 2,100 km of road to get 286 per kilometre	Get 286 and note it is only an average
27-37 min	Easing congestion	Cover tunnel diversion, electronic road pricing and rail expansion with one limitation each	State where each measure fails
37-42 min	Cross-border links	Compute 140 km in 47 minutes for about 179 km per hour	Get the speed and mention the three-runway target
42-45 min	Exit check	Ask why public transport use is so high in Hong Kong	High density, a dense rail network and high car ownership costs

03 Teaching script (read it out)

Scene 1: Public transport dominance: one per-capita number

Open with a life question: how many trips did you make yesterday? Then give the total: about 12 million public transport trips a day against 7.5 million people, so 12 divided by 7.5 is 1.6 trips per person per day. What that number means is that every resident averages more than one trip a day, including infants and housebound elderly people, so actual commuters travel more. Then break down the structure: the MTR carries about 5 million and franchised buses about 3.7 million, together 8.7 million or 72.5%, so three quarters of trips go by rail and bus. Give three reasons: population and jobs concentrate along the two sides of Victoria Harbour, the rail network is dense, and car ownership is expensive once parking, fuel and first registration tax are counted.

Ask students to divide 12 million by 7.5 million and give two reasons for the result

Scene 2: Road load: the average hides the peak

This section is about the average deceiving again. About 600,000 registered vehicles over 2,100 km of road gives roughly 286 vehicles per kilometre, which sounds modest, but that average includes remote rural lanes in the New Territories and arterial roads in Central. The real problem is concentration in time and place: at 8 am tens of thousands of vehicles converge on the three harbour tunnels and a handful of trunk roads, so the vehicles per kilometre at that moment are far above 286. Answers therefore have to separate average load from peak load. Then give three measures with limitations: tunnel diversion through differential tolls, which changes choices but cannot create capacity; electronic road pricing, which works but raises privacy and fairness objections; and rail expansion, which adds large capacity but costs a great deal and takes years.

Ask students why 286 vehicles per kilometre cannot describe congestion

Scene 3: Cross-border links: arithmetic for speed and capacity

Two calculations carry this section. First speed: Guangzhou is about 140 km away and the high speed rail journey takes about 47 minutes, so 47 minutes is 0.783 hours and 140 divided by 0.783 is about 179 km per hour, more than twice a typical road average, which is why the value of the link is time rather than fare. Second capacity: the three-runway system targets about 120 million passengers a year, roughly 330,000 a day, which has to be supported by runway numbers and destinations. The benefits are jobs and transhipment; the costs are construction price, environmental impact and conflict over surrounding land use. In answers, list benefits and costs separately and put a number on each.

Ask students to compute 140 km in 47 minutes and give one benefit and one cost of a cross-border link

04 Question types and worked steps

Type	Example	Steps	Answer
Trips per person	Daily public transport trips are 12 million and population is 7.5 million. How many trips per person per day?	(1) 12 million / 7.5 million (2) divide (3) answer 1.6 and note it includes people who never travel	About 1.6 trips
Road load	600,000 registered vehicles and 2,100 km of road: how many vehicles per kilometre on average?	(1) 600,000 / 2,100 (2) unit is vehicles per kilometre (3) add that it is an average	About 286 vehicles per kilometre
Speed	A 140 km journey takes 47 minutes by high speed rail. What is the average speed?	(1) Convert 47 minutes to 0.783 hours (2) 140 / 0.783 (3) unit is km per hour	About 179 km per hour
Recommendation	Suggest two ways to ease harbour tunnel congestion, each with one limitation.	(1) Be concrete, such as toll diversion or rail expansion (2) give a concrete limitation (3) close with a judgement	Tolls divert traffic but capacity is fixed; rail adds capacity but costs a lot and takes years

Sanity check (teach this): Three transport checks: (1) units must match, so minutes have to become hours before dividing for speed; (2) the magnitude must be plausible, since 1.6 trips per person makes sense while 16 does not; (3) every average needs the line that it is a territory-wide average, otherwise peak-hour and single-corridor conditions are hidden.

05 Independent practice (3 questions)

Question	Answer	What to watch
12 million trips over 7.5 million people: how many each?	About 1.6 trips	Did they put population in the numerator?
600,000 vehicles over 2,100 km: how many per kilometre?	About 286	Did they leave out the unit?
140 km in 47 minutes: what average speed?	About 179 km per hour	Did they convert minutes to hours first?

06 Common mistakes and what to say

Mistake	Student writes	Say this
Minutes not converted to hours	140 divided by 47 is 3, so the speed is 3 km per hour.	“You divided by minutes, so the answer is 3 km per minute. Multiply by 60 to get 179 km per hour.”
Using the average to deny congestion	Only 286 vehicles per kilometre, so Hong Kong roads are not congested.	“286 is a territory-wide average including rural lanes. Congestion has to be judged at peak hours in a single corridor, not by the average.”
Only one measure offered	Building another tunnel solves congestion.	“Tunnel capacity is finite, and traffic simply queues at the new portal. Give at least two measures with one limitation each.”
Ignoring cross-border costs	High speed rail and the third runway only bring jobs and benefits.	“State the benefits, but also the costs: construction price, environmental impact and conflict over nearby land use.”

07 Homework (paper, section and question numbers)

Population structure chapter, question 1 (density) — Concentrated homes and jobs along the harbour are what create commuting corridors
Manufacturing chapter, question 2 (average scale) — After relocation, local freight became cross-border freight
Map reading and scale chapter, questions 1-3 (routes and distance) — Measure a route with the scale, divide by time and you have average speed

08 Exit check (last 5 minutes)

Question	Answer	Decision
How many public transport trips happen daily, and how many per person?	About 12 million trips, about 1.6 per person	Answering 12 per person means the decimal place is wrong
What share of public transport do rail and buses carry?	About 72.5%	Answering half means only the MTR was counted
What is the average speed of high speed rail to Guangzhou?	About 179 km per hour	Answering 3 km means minutes were not converted

09 Tutor FAQ

Must students memorise 12 million and 2,100 km?

The magnitudes are enough: more than ten million trips a day and about two thousand kilometres of road. The point is the derived conclusions, 1.6 trips per person and 286 vehicles per kilometre.

Why is public transport use so high compared with other cities?

Homes and jobs concentrate in a narrow corridor on both sides of the harbour, the rail network is dense, and car ownership is expensive, so all three push travel onto public transport.

Which side should cross-border infrastructure answers take?

Both. Benefits are jobs, transhipment and time saved; costs are construction price, environmental impact and land use conflict, and one-sided answers usually earn half marks.

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A TutorZone lesson-prep guide. Written by the TutorZone team; questions and lesson flow are original and are not taken from any school or publisher material.