Two Locomotives in Warabi City

Unit 304 of the Class C11 locomotive preserved in Ooarata Traffic Playground

Do you have a place you’ve always wanted to check out? For example, somewhere you often pass by on the train but have never actually visited. Ooarata Traffic Playground in Warabi City was one such place for me. I had sometimes passed it by on JR East’s Keihin-Tohoku Line, but I had never stopped there until recently. One day, I got off at Warabi Station and walked along the track. About ten minutes later, what caught my eye was a preserved steam locomotive surrounded by a chain-link fence. This is it!

The preserved locomotive was Unit 304 of the Class C11. This model debuted in 1932 to reinforce the transportation capacity of the Japanese Government Railways’ local lines. It’s a small 2-6-4 type tank locomotive (Whyte notation). A total of 381 units were built. Unit 304 was manufactured in 1945 by Nippon Sharyo as part of the fourth production batch of the Class C11. After mainly operating on the Sagami Line, it was retired in 1965 and has since been preserved in Warabi City, Saitama Prefecture.

You can see the box-shaped steam and sand “domes” on the top center of the boiler, can’t you? They look different from those on earlier Class C11s such as Unit 227 and 245. This design change came in the last days of WWII. At that time, these box-shaped domes were adopted to simplify the manufacturing process under urgent wartime conditions. The war had even influenced locomotive design — how sad.

Incidentally, I found another C11 steam locomotive in the playground. Please take a look at the photo below — it’s for kids! How nice it is to live in peace.

Another "Class C11 steam locomotive (playground equipment)”

Keisei Skyliner AE Series: Over 60 Million Passengers

EMU Keisei AE series Skyliner displaying a gold-colored commemorative sticker

The 3rd-generation Skyliner operated by Keisei Electric Railway is still going strong. The total number of passengers has recently exceeded 60 million, and I’d like to share this happy news today.

Let’s begin with a brief overview. The Keisei Skyliner is an airport access train connecting central Tokyo with Narita International Airport. The current model, the EMU AE series, entered service in July 2010, replacing the previous AE100 series. The AE series is an EMU for 1,435-millimeter-gauge and 1,500 V DC track. A total of eight trainsets (64 cars in total) were introduced. Each set consists of six motorcars and two trailers (6M2T). The train is equipped with an IGBT–VVVF (Insulated Gate Bipolar Transistor-variable frequency drive) inverter control system and 175 kW induction motors. With a maximum speed of 160 km/h, it is the fastest train in Japan outside of the Shinkansen network.

The AE series reached 40 million total passengers in October 2022, then 50 million in July 2024 — meaning it took 21 months to carry another 10 million passengers. This time, it reached 60 million in July 2025, just 12 months later — quite an impressive pace!

To celebrate the milestone, Keisei held a commemorative ceremony at Narita Airport Terminal 1 Station. The 60 millionth passenger was a Japanese family returning home from a trip to Vietnam. Currently, one of the AE series trainsets, AE6, is decorated with special stickers on the front and sides to mark the occasion.

Congratulations to the Skyliner on this remarkable achievement!

Side body of the “60 Million Passengers” commemorative Skyliner

Official information (Keisei Skyliner):

https://www.keisei.co.jp/keisei/tetudou/skyliner/us/skyliner/index.php

Serving a Double Purpose on the Odakyu Line, Part 2

EMU 1000 (left) and 2000 series (right) running side by side on the Odakyu Line

It’s mid-autumn in Tokyo, and the daytime temperature now hovers around 20 degrees Celsius. The most comfortable season of the year has arrived! I recently visited the Tama River again along the Odakyu Line.

After getting off at Izumi-Tamagawa Station, I headed to the riverbank and focused on searching for fossils—my lifelong passion. Please take a look at the photo below. This was my find of the day: a fossilized Cultellus sp., a large, rectangular marine bivalve. Welcome back to the world above ground after more than a million years of sleep!

Of course, I can’t end without mentioning the railway side of things—this is a railway blog, after all! On my way home, I switched gears to another hobby: trainspotting at Izumi-Tamagawa Station. My theme that day was the “double-double track” (a quadruple track). In 1964, the company planned to expand the double track into a double-double track in the urban area to relieve congestion. Because of the densely built-up surroundings, the project took nearly half a century to complete, finally finishing in 2018.

Today, the inner two tracks are used for limited express and express trains, while the outer two are for semi-express and local trains. Please take a look at the top photo—seeing two trains running side by side like they’re racing is always exciting for rail fans.

That day, I enjoyed both the million-year history of the Earth and the modern engineering of the double-double track in the city. I truly served a “double purpose” that day on the Odakyu Line.

Fossil Cultellus sp. found near Izumi-Tamagawa Station

The 100th Anniversary of the Circular Operation

Set 39 of the JR East EMU E235 series, designed like the EMU 103 series

Are there any loop lines in your country? In Japan, there are a few. For example, the Osaka Loop Line is a well-known circular line in the western part of the country. The Meijo Line in Nagoya is the only subway loop line with continuous circular operation, and the Disney Resort Line in Chiba Prefecture is the only monorail loop line in Japan.

Thank you for waiting. Here comes the headliner! Japan’s most famous loop line is none other than JR East’s Yamanote Line. It loops through several central areas of Tokyo. The line is double-tracked, and each train keeps running in the same direction throughout the day—either clockwise or counterclockwise.

On November 1st, 2025, JR East will celebrate the 100th anniversary of the Yamanote Line’s circular operation. The line originally opened as part of the Nippon Railway’s Shinagawa Line and was gradually extended. In 1925, it was finally connected into a loop, and circular operation began under the Japanese Government Railways.

To commemorate this remarkable milestone, JR East is operating special trains using Sets 39 and 44 of the EMU E235 series. Set 39 features the nostalgic face of the former EMU 103 series, which ran on the line between 1963 and 1988, while Set 44 is designed in the style of the EMU 205 series, which was in service from 1985 to 2005.

Recently, I’ve often seen many railway fans gathering along the Yamanote Line to celebrate this special event. Of course, I’m one of them too.

Happy 100th anniversary of circular operation to the Yamanote Line!

Set 44 of the JR East EMU E235 series, designed like the EMU 205 series

Official video, "the 100th anniversary of the Yamanote Line's circular operation", by JR East:

https://www.youtube.com/watch?v=wuhCtUo74jQ

Official information, "the 100th anniversary of the Yamanote Line's circular operation", by JR East (in Japanese):

https://www.jreast.co.jp/tokyomovinground/exhibition/yamaf,es/

EMU 71-000 Series: A New Model on the Rinkai Line

The EMU TWR 71-000 series running on JR East’s Saikyo Line

I’m happy to introduce a new train that appeared in the Tokyo area this autumn — the EMU 71-000 series on the Rinkai Line. It’s been about three months since I last shared a new train here.

First of all, please take a look at the photo above. This is the Tokyo Waterfront Area Rapid Transit (TWR) 71-000 series, which made its debut on October 1st. This new DC commuter train was developed to replace the older 70-000 series. Technically, it’s almost the same as JR East’s E233-7000 series, which also runs on the Rinkai Line.

Its front design is said to express a gentle smile, and the blue stripe along the body represents the Tokyo Bay waterfront. I think it looks very nice and friendly.

At the moment, two trainsets are in service, and TWR plans to add six more by the middle of fiscal year 2027. The 70-000 series, which has been in service for many years, will be retired by the end of that same year.

By the way, TWR is a semi-public company established in 1991. The Rinkai Line has been in operation since 1996, running through the central part of the Tokyo Bay area. The 12.2-kilometer route is mostly underground, passing beneath reclaimed islands and connecting them with several undersea tunnels. Trains on the Rinkai Line also run through onto JR East’s Saikyo Line and other lines.

If you have a moment, please check the link below for the official video and information (in Japanese) about this new EMU 71-000 series.

Car 71-201 of Set z12, EMU TWR 71-000 series

Official video and information by TWR (in Japanese):

https://www.twr.co.jp/71000/tabid/382/Default.aspx

The Subway Above the JR East Line

Yotsuya Station: The “subway” Marunouchi Line (left) and the JR East Line (right)

As I mentioned before, Yotsuya, located in central Tokyo, is a complicated station shared by the JR East Chuo Line and the Tokyo Metro Marunouchi Line. For example, JR East’s Yotsuya Station is situated in a valley, with a railway tunnel located just beside it. On the other hand, although the Tokyo Metro Marunouchi Line is a “subway,” its Yotsuya Station is on an elevated track rather than underground. It’s quite confusing—so how are these two stations positioned relative to each other?

I recently captured a photo that clearly explains the mystery. In the top image, you can see a Tokyo Metro Series 2000 EMU on the left and a JR East Series E231 EMU on the right. Notice how the 2000 series rides above the E231 series—literally placing the “subway” above the JR East Line. This curious structure has a fascinating backstory.

The history begins in 1894, when the Kobu Railway (now JR East) built Yotsuya Station in the bottom of a valley. Over half a century later, in the 1950s, Eidan (now Tokyo Metro) began planning the Marunouchi Line as part of Tokyo’s growing subway network. They faced a major challenge: the line was too deep to tunnel beneath the Chuo Line. The solution was unexpected—the Marunouchi Line would be built as an elevated track directly above the Chuo Line, creating this unusual vertical layout.

Today, Yotsuya Station remains a rare example of Tokyo’s intricate railway history—a place where “subway” really means above rather than below.

To close, here’s one more photo showing the Marunouchi Line track as it emerges from a tunnel and approaches its elevated Yotsuya Station. This is a unique feature in Tokyo—a singularity in a city of wonders.

Marunouchi Line track approaching Yotsuya Station

Original Form of the EMU 7000 Series on the Sunzu Line

Set 1 of the Izu-Hakone Railway 7000 Series at Mishima Terminal

I’ve already uploaded over 1,900 posts on this blog over the past 14 years. I think I’ve introduced almost every existing train in the Tokyo metropolitan area by now. But wait—I realized there’s still one model in its original form that I haven’t shown you yet. Sorry if I sound a bit obsessive, but as a trainspotter, I’m particular about featuring trains I haven’t posted before.

Take a look at the top photo. This is EMU Izu-Hakone Railway 7000 Series Set 1. The 7000 Series was introduced in 1991 as a rapid service train on the Sunzu Line. A total of two sets (six cars) were built by Tokyu Sharyo. Set 1 still retains its original look, with its blue-striped front. You may remember when I introduced Set 2 of the 7000 Series on this blog—it was a very unique train with a gold-colored front. However, please note that Set 2 didn’t keep its original appearance; that was its look after renovation. For reference, the body stripe color also differs between Set 1 (original) and Set 2 (renovated); Set 1’s stripe is lighter than Set 2’s.

Over the past 14 years, I’ve sometimes visited the Sunzu Line, but I never came across Set 1 until this May. I wonder why... but finally, here it is! I came across it at Mishima-hirokoji station (see the photo below). Set 1—I hope we’ll meet more often from now on. I feel relieved that I can finally introduce the original form of the Izu-Hakone Railway 7000 Series EMU.

Set 1 arriving at Mishima-Hirokoji Station

A Hanging Strap with a Unique Design: Part 2

Mocoron-themed hanging strap in the Odakyu Mocoron Train

I was very surprised when I checked the “Popular Posts of the Last Month” section on this blog. To my surprise, “A Hanging Strap with a Unique Design” was ranked number one. As I mentioned in that post, it was just a “trivial topic” for me, so I was amazed by the result. I always post about what I find interesting, without thinking much about popularity. Even so, it still feels a little strange to me.

Now, this is the second post about the “hanging strap with a unique design". Please take a look at the top photo. I found this strap inside Set 5055 of the EMU 5000 series on the Odakyu Line. It has two small, ear-like protrusions on the top of the ring. Doesn’t it look like someone? … It’s Mocoron!

What is Mocoron?

Mocoron is the mascot character of Odakyu Electric Railway. He (or she) is a blue rabbit who helps promote child-friendly services on the Odakyu Line. Mocoron likes riding trains and is always looking for something fun. Please take a look at the photo below. You can see a stuffed Mocoron sitting in the driver’s cab of Set 5055, which is called the “Mocoron Train”. So cute, isn’t it?

By the way, Odakyu has not officially announced where the Mocoron-themed hanging straps are installed. As far as I know, there is at least one strap in each car of the Mocoron Train. I also found some in a few sets of the EMU 8000 series. In addition to taking photos of trains or observing their bodies, it might be enjoyable to look for Mocoron straps when you ride Odakyu trains. Trainspotting has many small pleasures, doesn’t it?

Stuffed Mocoron sitting in the driver’s cab of the Odakyu Mocoron Train

Nippori after a Long Time

A train view from Shimogoindenbashi (the EMU JR East E7 series)

Do you have a tradition of visiting ancestral graves in your country? In Japan, yes. Many people do it twice a year in spring and autumn honoring their ancestors. From our perspective, it is not so much a religious activity as a custom. Anyway, I recently visited my maternal ancestors’ grave in Yanaka of Tokyo Metropolis. Yanaka is famous for many cemeteries.

After updating my ancestors on how things are going, I enjoyed strolling around. First, I found myself drawn to Shimogoindenbashi (Shimogoinden Bridge) in front of Nippori Station for the first time in ten years. As I posted before, Shimogoindenbashi is well known as a train viewing spot. JR East’s 12 tracks are seen from the bridge. A total of 2,500 trains run under the bridge per day, so, we can enjoy train viewing continuously there. The bridge was crowded with railfans, families and inbound tourists. Please take a look at the top photo. I shot the JR East’s E7 series shinkansen train running under the bridge. I've been taking pictures of the E7 series repeatedly, but there's something special about a long-distance train approaching its goal, Tokyo Terminal. The E7 series… thank you for your hard work.

Another spot I visited was a scenic cemetery on a hill near Nippori Station. I could see an airport access train, EMU AE series “Skyliner” traveling on the elevated track of the Keisei Line (see the photo below). I have passed through this cemetery many times, but this was the first time for viewing trains. Was it a guidance from my ancestors as a token of their appreciation?

The EMU Keisei AE series Skyliner traveling on the elevated track

Official information, ”Shimogoindenbashi Train Museum" by Arakawa Ward, Tokyo Metropolis (in Japanese):

https://www.city.arakawa.tokyo.jp/a022/shisetsuannai/kankouspot/nippori006.html

Railroad Speeder on the Keisei Line

Keisei's railroad speeder Unit M2591 at Keisei-Makuhari station yard

When I visited the Keisei-Matsudo Line in August, I spotted a rare sight—a railroad speeder, Unit M2591, parked in the Keisei-Makuhari station yard. I got off at the station and was able to observe it from the platform. Please check out the top photo.

Railroad speeder Unit M2591 is a diesel work vehicle built by Matsuyama Jyusharyo Kogyo (MJK). Coupled with rail transport wagons, M2591 carries rails for track maintenance. Its technical specifications are unclear, but it seems capable of hauling over 20 tons of freight. It mainly operates after midnight, once the last train has finished running, so to be honest, I had never seen M2591 in action before. It’s an unsung hero, isn’t it? Its bright yellow body really stood out in the sunlight—beautiful!

Incidentally, did you notice the panda illustration on the side of the speeder? Please take a look at the photo below. This is the mascot character of Keisei Electric Railway, “Keisei Panda.” According to Keisei, he was born as a prince of the House of Panda on Planet Panda. But since he was lazy, his father, King Panda, sent him to Earth for training. Today, he lives in Narita City and works at a zoo as a zookeeper. On the speeder, Keisei Panda is depicted wearing work clothes. You might feel that this version of Keisei Panda looks less cute and even a bit creepy. And that’s right—Keisei intentionally designed their mascot character to have a strong impact rather than just conventional cuteness.

Keisei’s mascot character “Keisei Panda”

100th Anniversary of the Full-line Opening

Set 51095 of the EMU Tobu 50090 series

On July 10, Tobu Railway celebrated the 100th anniversary of the full-line opening of the Tojo Line. To commemorate this milestone, the company held several special events. Today, I’d like to share this topic with you.

Before that—if you feel something is strange about this anniversary, you must know a lot about Japanese railways. That’s right: I have already posted about the 100th anniversary of the Tojo Line. But that was eleven years ago. Please take a careful look at my previous post: it was not the 100th anniversary of the full-line opening, but of the partial opening of the Tojo Line.

Enough with the preamble. One highlight was a commemorative sticker mounted on the front of Set 51095 of the EMU 50090 series (see the top photo). The sticker features the number “100” (see the photo below). To avoid blown-out whites in the sticker image, I shot it with a narrower exposure.

For your information, the Tobu Tojo Line is one of the main transportation arteries in the metropolitan area. It began operation in 1914, connecting Ikebukuro in downtown Tokyo with Kawagoe City. The line was fully opened in 1925 between Ikebukuro and Yorii. Its total length is 75 kilometers, and it carries an average of one million passengers per day.

The 50090 series was launched in 2008 under the service name TJ Liner. Six sets (60 cars in total) were built by Hitachi. The trains are equipped with multi-purpose seats and feature a purple stripe along the sides—a symbol of Tobu’s premium commuter service.

Commemorative sticker displayed on the front of Set 51095