Citybus Route E21

A bus on Route E21 (6517) was U-turning at Catering Road West
Route information
Terminus	Tai Kok Tsui (Island Harbourview) ↔ SKYCITY ●
via	Mong Kok, Sham Shui Po, Cheung Sha Wan, Mei Foo, Tsing Yi, Tung Chung, Airport Logistics Area
Distance	To SKYCITY: 43.5km To Tai Kok Tsui: 45.6km
Travelling time	To SKYCITY: 86mins To Tai Kok Tsui: 88mins
Commencement date	22 May 1997
Operational information
Current operator	Citybus
Current depot	Siu Ho Wan Depot (T)
Main Vehicle	6501-6588, 8507-8524
Fare information
Full fare	$14.5
No. of section fare(s)	To SKYCITY: 2 To Tai Kok Tsui: 3 Two-way section fare: 2
Service hours
Origin service time	05:30 - 15:50
Destination service time	14:10 - 00:00
Headway	12-30mins

The North Lantau External Bus Route E21 is operated by Citybus. It runs between Tai Kok Tsui (Island Harbourview) and SKYCITY; after serving Mong Kok, Sham Shui Po, Cheung Sha Wan, Mei Foo, it goes on to Tsuen Wan Road and Tsing Tsuen Bridge and makes stops along Tsing Yi Road West, then takes the Cheung Tsing Highway and Lantau Link to and from Tung Chung and Hong Kong International Airport Logistics Area, Passenger Terminal Building).

Route E21 now provides daily daytime service to the Airport and afternoon to evening service to Kowloon, and is replaced by Routes E21B and E21D for the rest of the day.

History

• 22 May 1997: Route E21 entered service with the opening of the Lantau Link, running between Tai Kok Tsui and Tung Chung Town Centre at that time, which was the first bus route to connect between urban Kowloon and Lantau Island.
  • Citybus deployed its Volvo Olympian 12m buses on the route, and the destination names of the route signs were adopted from the Government's 1996 tender document, i.e. "Tai Kok Tsui AR Station" and "Tung Chung AR Station".
  • Initially, services detouring via Tung Chung Ferry Pier for Tung Chung Town Centre direction was provided during Saturdays and public holidays.
• 2 February 1998: No longer observing Tung Chung Ferry Pier due to cessation of Tung Chung - Tai O Ferry service.
• 22 June 1998: Tung Chung terminus was relocated from Tung Chung Town Centre to Tung Chung MTR Station beside it.
• 11 October 1998: Temporarily diverted via Lai Chi Kok Road and Wong Chuk Street for 19 months for Tung Chung bound due to the stormwater drainage replacement works at Nathan Road.
• 30 November 1998: Rerouted via Hoi Fai Road and Sham Mong Road after leaving Tai Kok Tsui terminus for Tung Chung direction, no longer passing through Cherry Street Tunnel; a new stop was also added at Sham Mong Road outside HSBC Centre.
• 28 March 1999: Extended from Tung Chung MTR Station to Chek Lap Kok Ferry Pier, with a new section fare from Shun Tung Road to Chek Lap Kok Ferry Pier.
  • Detoured for both directions via Chek Lap Kok South Road, Chun Wan Road, Catering Road West, Scenic Road, East Coast Road and Cheong Tat Road, with an additional detour via Cheong Tat Road for Chek Lap Kok direction.
• 27 June 1999: Routing within the Airport Logistics Area was simplified:
  • Towards Airport: Upon arrival at Chek Lap Kok South Road, buses would continue along Chek Lap Kok South Road straight to Chun Ping Road, and would not return to Chun Ping Road via Scenic Road, Chun Yue Road, Chun Wan Road South and Chun Wan Road;
  • Towards Tai Kok Tsui: Upon reaching Chun Ping Road, buses were diverted via Chek Lap Kok South Road direct to Tung Chung, not returning to Chun Wan Road via Chun Wan Road South, Chun Yue Road and Scenic Road to Chek Lap Kok South Road; and at the same time, in view of the commissioning of the Bus Stop Loop on Scenic Road, buses were detoured via the loop and a new stop was set up there, in order to replace the en-route stop "Cathay City" on Scenic Road southbound.
• 15 August 1999: Tai Kok Tsui terminus was relocated to Island Harbourview Public Transport Interchange.
• 2 April 2001: A new Octopus two-way section fare from Chek Lap Kok Ferry to Airport Cargo Area was added to facilitate the cancellation of Route S55, with additional interchange concessions with Route S52.
• 22 August 2004: A new cash two-way section fare was introduced with the diversion of Route 701 to West Kowloon Corridor for Mong Kok direction.
• 24 September 2004: Due to the permanent closure of the southern end of Cheong Tat Road, the bus stop "Car Park 2" on Cheong Tat Road was cancelled for Chek Lap Kok Ferry Pier direction, and was replaced by the stop at Car Park 1 on the temporary road to the east of Cheong Tat Road.
• 1 May 2005: In view of the closure of the Chek Lap Kok Ferry Pier Bus Terminus, the terminus was relocated to the Ground Transportation Centre.
• 16 August 2005: Octopus interchange concession with Route R8 was introduced.
• 20 December 2005: Extended to AsiaWorld-Expo to tie in with the opening of AsiaWorld-Expo.
• 21 May 2007: Rerouted via Sai Yee Street in lieu of Sai Yeung Choi Street South for Island Harbourview direction with a new stop at "Fa Yuen Street Market" on Mong Kok Road and "Tung Choi Street" on Argyle Street to facilitate the relocation of urban terminus of Route E21A to Ho Man Tin (Oi Man Estate).
• 7 July 2008: The applicable area of Octopus two-way section fare was extended from Airport Logistics Area to Tung Chung following the rerouting of Route S52 via the whole section of Chun Wan Road.
• 25 August 2008: The "Chun Ping Road" and "Airport Freight Forwarding Centre" stops originally located at Chun Wan Road eastbound towards AsiaWorld-Expo were cancelled permanently and replaced by a new "Airport Freight Forwarding Centre" stop between the two original stops.
• 20 September 2009: The arrangement of heading to Argyle Street via Sai Yeung Choi Street South was reinstated with the reinstatement of the stop at Sai Yeung Choi Street South to facilitate the stop rearrangements at Mong Kok Road.
• 30 March 2017: Starting from 2:30pm, buses towards AsiaWorld-Expo were diverted via Cheong Hong Road underneath the bridge section of Cheong Tat Road to "Regal Airport Hotel" bus stop for Tung Chung Station direction, and the "Car Park 4" bus stop was cancelled to tie in with the closure of the section of Cheong Tat Road outside the Government Lounge Carpark for the Airport Passenger Terminal Building extension.
• 3 November 2017: The bus Stop "Terminal 1 and Terminal 2" was temporarily relocated from outside Carpark 1 to outside Terminal 1 with effect from 10:00am to accommodate the conversion of the former into a coach pick-up/drop-off area.
• 15 December 2017: "Next Bus" Arrival Time Inquiry Service was introduced on this route.
• 22 July 1998: Rerouted via Sham Mong Road, Hoi Fai Road and Hoi Fan Road to Island Harbourview terminus for Tai Kok Tsui direction:
  • The stop at "The Long Beach" on Hoi Fai Road was cancelled, with new stops added at "Central Park" on Cherry Street, "Olympic Station" and "Harbour Green" on Sham Mong Road.
• 6 September 2020: A new Octopus interchange concession with NWFB Route 701A was added to facilitate its rerouting with the omittance of the area around Olympic Station.
• 26 September 2020: The entrance/exit of the AsiaWorld-Expo Bus Terminus connecting to Sky City Road was closed due to the construction works of the Hong Kong Infection Control Centre of the North Lantau Hospital. After reaching Sky City Road in the direction of the AsiaWorld-Expo, the route was diverted via Airport Expo Boulevard and Expo Road West to enter the terminus; and from the AsiaWorld-Expo, the route would return to Sky City Road via Expo Road West and Airport Expo Boulevard (eastbound), U-turn and Airport Expo Boulevard (westbound) to return to Sky City Road to its original routing.
• 23 August 2021: Departure from AsiaWorld-Expo at 07:15 on Mondays to Fridays was delayed by 5 minutes to 07:20, and was rerouted via Tung Chung North instead of Tung Chung Town Centre.
• 29 August 2022: Service hours were shortened:
  • Departures from AsiaWorld-Expo were changed to operate from 14:10 to 00:00 daily, and that from Tai Kok Tsui (Island Harbourview) were changed to operate from 05:30 to 15:50 daily;
  • Morning special departure via Tung Chung North on Mondays to Fridays was upgraded to a new route E21D with extended service hours and new return trip service.
• 26 November 2023: The Airport terminus was relocated from AsiaWorld-Expo to the newly completed SKYCITY Transport Terminal.

Historical route information

Details of the past service hours and headways, fares and other route information of this route are set out in the "Historical route information" sub-page of this article.

Service hours and headways

The latest update is on 11/2023, please refer to the link below for the official route information.

From Tai Kok Tsui (Island Harbourview) Service hours Headways (mins) Mondays to Fridays 05:30 - 05:42 12 05:42 - 06:21 13 06:21 - 06:35 14 06:35 - 07:01 13 07:01 - 07:40 19／20 07:40 - 12:10 30 12:10 - 12:50 20 12:50 - 15:50 30 Saturdays 05:30 - 05:42 12 05:42 - 06:21 13 06:21 - 06:35 14 06:35 - 07:20 15 07:20 - 07:40 20 07:40 - 08:30 25 08:30 - 13:30 30 13:30 - 15:50 20 Sundays and Public Holidays 05:30 - 06:30 15 06:30 - 07:50 20 07:50 - 14:50 30 14:50 - 15:50 20

From SKYCITY Service hours Headways (mins) Mondays to Fridays 14:10 - 16:10 30 16:10 - 16:50 20 16:50 - 17:05 15 17:05 - 18:05 12 18:05 - 18:20 15 18:20 - 19:00 20 19:00 - 00:00 30 Saturdays 14:10 - 16:50 20 16:50 - 17:50 12 17:50 - 19:20 15 19:20 - 20:00 20 20:00 - 00:00 30 Sundays and Public Holidays 14:10 - 16:50 20 16:50 - 19:20 15 19:20 - 20:00 20 20:00 - 00:00 30

Outside service hours of this route, passengers may use the following routes between Lantau and Sham Shui Po/Mong Kok:

• Route E21B via Tung Chung Town Centre (interchange to Route E21D at Lantau Link Bus-Bus Interchange to and from Tai Kok Tsui);
• Route E21D via Airport and Tsing Yi;
• Passengers may also use Route N21 or N21A during overnight hours.

This route provides "Next Bus" Arrival Time Enquiry Service.

Fares

Journey/Boarding stop	Fares
Full fare	$14.5
Section fares (to SKYCITY)
Bute Street or before	$3.7 *
From Hang Chui House Cheung Hang Estate	$8.3
From Tung Chung Fire Station	$4.2
Section fares (to Tai Kok Tsui)
Yu Tung Court or before	$4.2 *
From Ching Wah Court	$6.2
From Mei Foo	$5.0
From Mong Kok Police Station	$3.7

Fare Remarks

Half-fare for children aged below 12 and senior citizens aged 65 or above; the remainder of the fare after half-fare will be counted as 10 cents. Elderly persons aged 65 or above using Senior Octopus Cards or Personalised Octopus cards, Hong Kong residents aged 60 to 64 using JoyYou Card, and eligible persons with disabilities using Personalised Octopus cards with "Persons with Disabilities Status" can enjoy a flat fare of $2.0 per journey under the $2 Concessionary Fare. If the concessionary fare for eligible persons with disabilities aged below 12 and senior citizens aged 65 or above is less than $2.0 after a 50% discount from the regular fare, the beneficiary is only required to pay the original concessionary fare; if the original full fare for Hong Kong residents aged 60 to 64 or eligible persons with disabilities is already less than $2.0, the beneficiary is also only required to pay the original full fare. Passengers are required to tender exact fare by cash or by Octopus card when boarding. No exact change will be given. Passengers may also use AlipayHK "EasyGo", Alipay, QuickPass, BoC Pay "RideCode", WeChat Pay HK or WeChat "Ride Code", Visa, Mastercard and UnionPay cards with inductive payment capabilities, as well as Apple Pay, Google Pay, Samsung Pay and Huawei Pay mobile payment platforms for fare payment. Passengers using the above payment method can only enjoy the interchange concessions with other Citybus solely-operated routes or the Citybus departures of the jointly-operated routes, and cannot enjoy the "Public Transport Fare Subsidy Scheme" nor the "Public Transport Fare Concession Scheme for the Elderly and Eligible Persons with Disabilities". * Two-way section fare - Passengers are required to pay by Octopus card or mobile e-payment platforms, and to confirm once with the same card or same account when getting on and off the bus. If other means of payment is used or the card is not reconfirmed on alighing, the fare from the boarding stop to the final destination will be charged.

Bus-Bus Interchange Concessions

Passengers using the same Octopus card to interchange to the designated route after this route within a specific time, or transfer from the designated route to this route can enjoy an interchange concession. The details are as follows: (Half discount for children and senior citizens.) Template:Citybus Route E21 Bus-Bus Interchange Concession Scheme

Lantau Link BBI Interchange Concession Scheme

Template:Citybus Lantau Link BBI Interchange Concessions

Disneyland

Template:Disneyland Shuttle Bus Route R8 Interchange Concession Scheme

NLB Tung Chung Town Centre Interchange Concessions

Details of NLB Tung Chung Town Centre Interchange Concessions
＼	Corresponding to　(: Concession applies to)
Description	37	37A	37H	37M	37P	N37	38	38X	N38	39M
Interchanging from Citybus routes heading to Airport/SKYCITY E11/E11A/E11B/E21/E21D/E22/E22A/E23/E23A (Concession is only applicable to passengers who pay $14 or above for the first journey)
Interchanging from LWB routes heading to Airport/SKYCITY E32/E33/E33P/E36/E36P/E36S/E37/E41/E42 (Concession is only applicable to passengers who board before Lantau Link BBI or Tuen Mun Chek Lap Kok Tunnel BBI)
The time limit for the above interchange is 150 minutes (counting from the time of tapping on the first journey)
Interchanging to Citybus routes from Airport/SKYCITY E11/E11A/E11B/E21/E21D/E22/E22A/E23/E23A
Interchanging to LWB routes from Airport/SKYCITY E32/E33/E33P/E36/E36P/E36S/E37/E41/E42
The time limit for the above interchange is 90 minutes (counting from the time of tapping on the first journey)
Interchanging from MTR Tung Chung Line after exiting the gate at Tung Chung Station
Interchanging from NLB Routes to MTR Tung Chung Line after tapping card on the former
The time limit for the above interchange is 90 minutes
Interchanging to Routes B6/B6S to HZMB Hong Kong Port	Reduce $2.2		Reduce $2.2	Reduce $2.2			Reduce$3.6	Reduce$2.2
Interchanging from Route B6 from HZMB Hong Kong Port	Reduce $2.2		Reduce $2.2	Reduce $2.2			Reduce $3.6
The time limit for the above interchange is 60 minutes
Points to note: Passengers using the same Octopus card to interchange between designated public transport modes after travelling on a designated NLB routes (in the same direction as the journey to Tung Chung Station) or from a designated public transport mode to a designated Lantau bus route (in the same direction as the journey from Tung Chung Station) within a specified period of time can enjoy a $1.0 discount on the second trip (concession amount discounted by 50% for senior citizens aged 65 or above, or children aged below 12). For passengers who benefit from the Public Transport Fare Concession Scheme for the Elderly and Eligible Persons with Disabilities, the second journey fare is the lower of the above second journey concessionary fare (50% discount for elderly aged 65 or above or eligible persons with disabilities aged below 12) and $2.0, therefore, there may be some combinations of interchanges without interchange concessions. Connections to MTR are only applicable to passengers using Adult Octopus (on all above Lantau routes) or Personalised Octopus with "Persons with Disabilities Status" (except NLB routes 39M and N37) to travel on MTR fare-charging journeys. Passengers using Tung Chung - Hong Kong Monthly Pass Extra, Tung Chung - Nam Cheong Monthly Pass Extra or Disneyland Resort Line Monthly Pass who travel on MTR free of charge or pay First Class Premium only are not eligible for this concession. The "HZMB Hong Kong Port Employee Travel Scheme" of NLB cannot be used in conjunction with this interchange concession. Official website: NLB: Octopus interchange concessions Citybus: Tung Chung Town Centre Interchange Concessions MTR: MTR Interchange Concessions Edit

Bus deployments

This route and Route E21D are served by a total of 13 double-decker buses, mainly using Enviro500 MMC 12m normal version (8507-8524) and 12.8m (6501-6588) equipped with luggage racks, and Enviro500 MMC 12m luxury version (80XX) and 12.8m (68XX, 638XX) belonging to the Cityflyer fleet may be used for some of the trips.

Routing

To SKYCITY

To SKYCITY: The distance of this route is approx. 43.5km, and the journey time is approximately 86mins. (The average speed is 30.3km/h.)

Via: Hoi Fan Road, slip road, Lin Cheung Road, Hoi Fai Road, Sham Mong Road, Cherry Street, Tai Kok Tsui Road, Cherry Street, Argyle Street, Reclamation Street, Mong Kok Road, Nathan Road, Cheung Sha Wan Road, Lai Chi Kok Road, Kwai Chung Road, Tsuen Wan Road, Tsuen Tsing Interchange, Tsing Tsuen Road, Fung Shue Wo Road, Tsing Yi Road West, Cheung Tsing Highway, North West Tsing Yi Interchange, Lantau Link, North Lantau Highway, Tung Chung Eastern Interchange, Yu Tung Road, Shun Tung Road, Chek Lap Kok South Road, Chun Wan Road, Chun Wan Road Interchange, Catering Road West, Chun Wan Road Interchange, Scenic Road, East Coast Road, Airport Road, Cheong Lin Road, Cheong Tat Road, Airport North Interchange, Sky City Road and Second Sky Street

Citybus Route E21 (Tai Kok Tsui (Island Harbourview) → SKYCITY)
No.	Area	Road	Bus stop name	Remarks
1	Tai Kok Tsui West		Island Harbourview
2	Tai Kok Tsui	Sham Mong Road	Chung Wui Street	Near Harbour Green, Cosmopolitan Estates
3			Olympic Station	Near HSBC Centre
4		Tai Kok Tsui Road	Foo Kwai Street
5		Cherry Street	Ming Kei College	Near Olympian City 3
6	Mong Kok	Reclamation Street	Fife Street	Near Langham Place
7		Nathan Road	Bute Street	Octopus two-way section fare ends here Near Pioneer Centre
8			Prince Edward Station
9	Sham Shui Po	Cheung Sha Wan Road	Maple Street
10			Wong Chuk Street
11			Pei Ho Street
12			Yen Chow Street
13			Yee Kok Court
14	Cheung Sha Wan		Cheung Sha Wan Playground
15			Hing Wah Street
16			Cheung Sha Wan Plaza
17	Lai Chi Kok (Mei Foo)	Lai Chi Kok Road	Mei Foo
18	Kwai Chung (Container Terminals)	Kwai Chung Road	Kwai Chung Interchange
Tsuen Wan Road; Tsing Tsuen Road
19	Tsing Yi (Liu To Hill)	Tsing Yi Road West	Hang Chui House Cheung Hang Estate	Section fare begins here
20	Tsing Yi South		Ching Wah Court	Near Cheung Hong Estate
Lantau Link
21	Tsing Chau Tsai Peninsula		Lantau Link Bus-Bus Interchange	Section fare begins here
North Lantau Highway
22	Tung Chung Town Centre	Shun Tung Road	Tung Chung Fire Station	Section fare begins here Near Yu Tung Court, Fu Tung Estate For Citygate and Tung Chung Station , please alight at this stop
23			Tung Chung Crescent	Near Tung Chung Cable Car Terminal
24	Airport (Logistics Area)	Chek Lap Kok South Road	Chek Lap Kok South Road
25	Airport (Cargo Area)	Chun Wan Road	Airport Freight Forwarding Centre
26			HACTL	Near SuperTerminal One, Cathay Pacific Cargo Terminal
27	Airport (Catering Area)	Catering Road West	Air Mail Centre
28	Airport (Logistics Area)	Scenic Road	Cathay Pacific City
29		East Coast Road	Cathay Pacific City (East)	Near Airport Golden Trumpet Trail
30	Airport (Terminal Area)	Cheong Lin Road	Gate House No.2
31		Cheong Tat Road	Car Park One
32			Terminal 1 (North)
33			Regal Airport Hotel
34	Airport (SkyCity)		SKYCITY

To Tai Kok Tsui (Island Harbourview)

To Tai Kok Tsui: The distance of this route is approx. 45.6km, and the journey time is approximately 88mins. (The average speed is 31.1km/h.)

Via: Third Sky Street, Sky City Road East, Sky City Interchange, Cheong Lin Road, Airport South Interchange, Cheong Lin Road, Ground Transportation Centre Bus Terminus, Cheong Lin Road, Airport South Interchange, Airport Road, East Coast Road, Scenic Road, Bus Stop Loop on Scenic Road, Chun Ming Road, Scenic Road, Chun Wan Road Interchange, Catering Road West, Chun Wan Road Interchange, Chun Wan Road, Chun Ping Road, Chek Lap Kok South Road, Shun Tung Road, Tat Tung Road, Shun Tung Road, Yu Tung Road, Tung Chung Eastern Interchange, North Lantau Highway, Lantau Link, North West Tsing Yi Interchange, Cheung Tsing Highway, Tsing Yi Road West, Fung Shue Wo Road, Tam Kon Shan Interchange, Tsing Tsuen Road, Tsuen Tsing Interchange, Tsuen Wan Road, Kwai Chung Road, Cheung Sha Wan Road, Nathan Road, Mong Kok Road, Sai Yeung Choi Street South, Argyle Street, Cherry Street, Sham Mong Road, Hoi Fai Road and Hoi Fan Road

Citybus Route E21 (SKYCITY → Tai Kok Tsui (Island Harbourview))
No.	Area	Road	Bus stop name	Remarks
1	Airport (SkyCity)		SKYCITY
2	Airport (Terminal Area)		Airport (Ground Transportation Centre)
3	Airport (Logistics Area)	Bus Stop Loop on Scenic Road	Cathay Pacific City
4	Airport (Catering Area)	Catering Road West	Airport Police Station
5	Airport (Cargo Area)	Chun Wan Road	Chun Wan Road South	Near HACTL, Cathay Pacific Cargo Terminal
6			Airport Freight Forwarding Centre
7		Chun Ping Road	Asia Airfreight Terminal
8	Airport (Logistics Area)	Chek Lap Kok South Road	Chek Lap Kok South Road
9	Tung Chung Town Centre	Tat Tung Road	Tung Chung Cable Car Terminal
10			Fu Tung Plaza
11		Shun Tung Road	Yu Tung Court
North Lantau Highway
12	Tsing Chau Tsai Peninsula		Lantau Link Bus-Bus Interchange	Section fare begins here
Lantau Link
13	Tsing Yi South	Tsing Yi Road West	Ching Wah Court	Section fare begins here Near Cheung Hong Estate
14	Tsing Yi (Liu To Hill)		Cheung Hang Estate
Tsing Tsuen Road; Tsuen Wan Road
15	Kwai Chung (Container Terminals)	Kwai Chung Road	Kwai Chung Interchange
16	Lai Chi Kok (Mei Foo)	Cheung Sha Wan Road	Mei Foo	Section fare begins here
17	Cheung Sha Wan		Lai Chi Kok Station	Near Cheung Sha Wan Plaza
18			Cheung Wah Street
19			Cheung Sha Wan Station	Near Un Chau Estate
20	Sham Shui Po		Yee Kok Court
21			Yen Chow Street	Near Cheung Sha Wan Government Offices
22			Sham Shui Po Station
23			Wong Chuk Street
24	Mong Kok	Nathan Road	Mong Kok Police Station	Section fare begins here
25		Sai Yeung Choi Street South	Sai Yeung Choi Street South	Near Argyle Centre
26		Argyle Street	Yau Tsim Mong District Health Centre	Near Mong Kok Market
27	Tai Kok Tsui	Cherry Street	Ming Kei College	Near Olympian City 3
28			Central Park	Near Olympian City 2
29		Sham Mong Road	Olympic Station	Near HSBC Centre
30			Harbour Green	Near Cosmopolitan Estates
31	Tai Kok Tsui West		Island Harbourview	Near Olympian City 1

Ridership

Sham Shui Po to Lantau is also served by the faster Routes E21A and A23, but the former only serves Tung Chung on Lantau, while the latter is less frequent and has higher fares. This airport-bound route has cheaper section fares at Tsing Yi than LWB to compete with its routes E31 and E32.

In order to provide residents around Yat Tung Estate with an express service to Kowloon without going through Tung Chung North, in 2021, one morning departure of Route E21A on weekdays were changed to detour via Tat Tung Road and go directly to Route 8, and one morning eastbound departure of this route was changed to detour via Tung Chung North without going through Tung Chung Town Centre as an alternative, which was the first time that the whole day service was split. In the following year, this route was reduced to provide daytime service to the Airport and afternoon service to Kowloon only, and was replaced by the new route E21D which was upgraded from the special trip via Tung Chung North for the rest of the day.

According to the Bus Route Planning Programmes and other documents, the ridership of this route is as follows:

• 2015: Approximately 5,800 passengers per day were recorded.
• 2016: Approximately 6,600 passengers per day were recorded.
• 2018: About 70 people used the bus stops within Tai Kok Tsui to travel to the Airport throughout the day.
• 2021: The occupancy rate during the busiest hour was 67%.
• 2022: The occupancy rate during the busiest hour was 67%.

Related incidents

Traffic accidents

• 26 November 2008: At around 1:00pm, a Dennis Trident (2210/HW6791) heading towards the AsiaWorld-Expo collided with a bus on Route E21A, a coach bus and a lorry on the North Lantau Highway, resulting in 12 injuries.
• 1 February 2015: At the junction of Cheung Sha Wan Road and Hing Wah Street, a Dennis Trident (2258/HW3686) travelling towards Tai Kok Tsui (Island Harbourview) collided with a taxi cutting in the adjacent lane, which then drove onto the pavement, injuring the taxi driver and his male passenger.
• 1 August 2019: Eight passengers were injured when an Enviro500 MMC (8518/TG3653) heading towards AsiaWorld-Expo collided with a tractor-trailer lorry on Tsing Yi Road West heading towards Tsing Ma Bridge at nearly 10:00 a.m. This is the fourth traffic accident involving Citybus in 15 days.
• 17 March 2020: An Enviro500 MMC (8530/TK7131) heading towards AsiaWorld-Expo collided with a lorry on Sham Mong Road, sustaining serious front end damage.
• 25 June 2020: At 8:45 am, a Tai Kok Tsui bound Enviro500 MMC was hit by a lorry on the North Lantau Highway and its right side was hit by a lorry, with the last two pieces of glass on the right side broken.

Passenger and bus captain incidents

• 24 February 2014: At about 00:00 a.m., a passenger died suddenly while travelling on a Dennis Trident (2249/HW674), and was found by the bus driver when the bus arrived at Tai Kok Tsui (Island Harbourview).
• 26 November 2018: At nearly 2:00 pm, a Tai Kok Tsui bound Enviro500 MMC (6584/VT8142) was travelling over Tsing Ma Bridge when the bus driver was suspected to have taken a wrong route and did not follow the original route to Tsing Yi. The bus stopped near the Stonecutters Bridge and waited for the company to deploy a patrol vehicle to the scene to guide it away, during which many passengers on board raised noise.

Gallery

Semi-luxury version Dennis Trident (22XX) was the past common model on Route E21

The main models on Route E21 are the normal version Enviro500 MMC (8507-8524)

Some trips of Route E21 are served by 12-metre long luxury version Enviro500 MMC (80XX)

More pictures, photos and related information about this article are available in the following Gallery Page:

Citybus Route E21 (Edit)

Remarks

Related articles

Citybus Route A20 Citybus Route A21 Citybus Route A23 Citybus Route E21A Citybus Route E21B Citybus Route E21C Citybus Route E21D

Citybus Route E21X Citybus Route N21 Citybus Route N21A Citybus Route NA20 Citybus Route NA21 Citybus Route X21 (1st generation) (Cancelled)

References

External links

• Citybus Official Route Information: E21 (to SKYCITY)
• Citybus Official Route Information: E21 (to Tai Kok Tsui (Island Harbourview))
• Timetable approved by Transport Department