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Willam Thorpe
By bullet train I’m assuming you’re talking about high speed trains in general. Internationally, high speed trains are generally defined as running at a speed of at least 200km/h (about 125mph). This can vary a bit; here in Australia, the Tilt Train is often called high-speed. It has a maximum in-service speed of 160km/h (about 100mph).
The next category is higher-speed rail – faster than a conventional commuter train but slower than a high-speed train. The definitions here vary quite a lot, here are some examples from the different US agencies:

我猜您說的子彈頭列車指的是一般的高速列車。在國際上，高速列車一般被定義為運行速度至少為 200 公里/小時（約 125 英里/小時）。在澳大利亞，傾斜列車通常被稱為高速列車。它的最高運行速度為 160km/h（約 100mph）。
下一類是高速鐵路--比傳統(tǒng)通勤列車快，但比高速列車慢。這里的定義差異很大，以下是美國不同機構(gòu)提供的一些例子：
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As you can see, they vary a lot, going as low as 80mph (about 130km/h) and as high as 150mph (240 km/h), even higher than the most widely accepted definition of high-speed rail. An example of a higher-speed rail service is the Northeast Regional in America or the XPT in Australia.
Then you have your typical commuter rail. These are the trains that you use most frequently in commuting to work/school or general travel. They most often operate in and around cities.

正如您所看到的，這些列車速度差別很大，最低可達80英里每小時（約130公里/小時），最高可達150英里每小時（240公里/小時），甚至比最廣泛接受的高速鐵路定義還要高。一個更高速的鐵路服務(wù)的例子是美國的東北地區(qū)列車或澳大利亞的XPT列車。然后你有典型的通勤鐵路。這些是您在通勤上下班/上學(xué)或一般旅行中最常使用的火車。它們通常在城市內(nèi)外運營。
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Commuter trains in Sydney

悉尼的通勤火車

While there are no set speed definitions for commuter trains, they’re generally slower than higher-speed rail services. I’ll use my home city of Sydney as an example, as it has a quite extensive commuter rail network spanning around 1000km throughout the city. The highest posted speed limit is 115km/h (71mph) although usually trains will reach at most 80km/h (50mph) in the relatively short distances between suburban stations.

雖然通勤火車沒有固定的速度定義，但它們通常比高速鐵路服務(wù)慢。我以我家鄉(xiāng)悉尼為例，因為它有一個相當(dāng)廣泛的通勤鐵路網(wǎng)絡(luò)，覆蓋了城市內(nèi)外約1000公里。最高限速為115公里/小時（71英里/小時），盡管通常列車在郊區(qū)站之間的相對短距離內(nèi)最多只能達到80公里/小時（50英里/小時）。

Using these examples, a high-speed train is at least 85km/h (53mph) faster than a commuter train. In reality, this is much more pronounced, as high-speed Acela Express trains in America reach 250km/h (155mph). Another example, the TGV in Europe, travels at 320km/h (200mph).

利用這些例子，高速列車至少比通勤列車快85公里/小時（53英里/小時）。實際上，這種差距更為明顯，例如美國的高速列車Acela Express達到250公里/小時（155英里/小時）。另一個例子，歐洲的TGV列車以320公里/小時（200英里/小時）的速度行駛。

Alan Williams
What about the better comparisons; the international hi-speed trains: China, Japan, many European countries, many much faster then Australia and the US. The maglev hi-speed train from Shanghai city to Shanghai International Airport, well over 500 kph.

那么更好的比較是什么呢？國際高速列車：中國、日本、許多歐洲國家，很多都比澳大利亞和美國快得多。從上海市到上海國際機場的磁懸浮高速列車，時速超過500公里。

William Thornton
Yes, America is not very advanced in high speed trains like we are in aviation.

是的，美國在高速列車方面不太發(fā)達，就像我們在航空方面一樣。

Andy Duffell
I work for a passenger rail company that operates both “bullet trains” and conventional stock. In our case we’ve got Hitachi trains, and they build the actual Shinkansen bullet trains, so while it’s not a term you here used for our stock it’s basically what they are.

我在一家客運鐵路公司工作，既有“子彈頭”列車，也有普通車輛。在我們這種情況下，我們有日立列車，他們建造實際的新干線子彈頭列車，所以雖然這個術(shù)語在我們的車輛中并沒有被使用，但它基本上是描述我們的車輛的。

Our normal trains are rated for either 75mph or 90mph, depending on whether they’re inner city or mainline stock. Our high speed units are rated for 140mph when they’re running on the actual high speed lines.

我們的普通列車的速度評級為75英里/小時或90英里/小時，取決于它們是城市內(nèi)還是主干線車輛。我們的高速列車在實際的高速線路上運行時的速度評級為140英里/小時。

So compared to our suburban stock they’re nearly twice as fast, and compared to our mainline trains they’re about 55% faster. There is some stock operated by another company that runs on the same high speed lines as us though, and their new trains can hit the maximum line speed of 186mph, which is pretty quick.

因此，與我們的市郊車輛相比，它們快近一倍，與我們的主干線列車相比，它們大約快55%。但是，還有另一家公司運營的列車也在我們同樣的高速線路上行駛，他們的新列車可以達到最大線路速度186英里/小時，這相當(dāng)快。

Tom Gupta
It depends on what country you are in, along with the type of train and infrastructure (e.g. in the UK Virgin Class 390 Pendolinos, while they can reach 140mph they can go no faster than 125mph, less in some places due to rail infrastructure)

這取決于您所在的國家、列車類型和基礎(chǔ)設(shè)施（例如，在英國，雖然Virgin Class 390 Pendolinos可以達到140英里/小時的速度，但由于鐵路基礎(chǔ)設(shè)施的限制，它們最快只能達到125英里/小時或更少）。

Anyway, the Original Type 0 Japanese Bullet train, part of the Shinkansen family, which entered service in 1964 has a maximum operating speed of 135mph, with a maximum speed of 137mph (FYI in the UK the fastest tracks are on HS1 and trains can reach speeds of 155mph). Their latest train, the H5, can reach 200mph.

無論如何，日本新干線家族中的原始0型新干線列車在1964年投入使用，最高運行速度為135英里/小時，最高時速為137英里/小時（值得一提的是，在英國最快的軌道是HS1，列車可以達到155英里/小時的速度）。他們最新的列車，H5，可以達到200英里/小時的速度。

The Shanghai Airport Maglev has an operating commercial speed of 268mph (it is the fastest operating train service in the world) but has reached speeds of 311mph.
In short it all depends on the train, technology and the infrastructure.

上海機場磁懸浮列車的商業(yè)運營速度為268英里/小時（它是世界上最快的運行列車服務(wù)），但已經(jīng)達到了311英里/小時的速度。簡而言之，這都取決于列車、技術(shù)和基礎(chǔ)設(shè)施。

Ronald Chan
According to info found on internet/Wikipedia, there are no high speed trains currently in the USA. Speed varies according to where located, curves, crossings, etc. Most tracks have a speed limit of 80mph or less. Amtrak trains can go up to 100mph.

根據(jù)在互聯(lián)網(wǎng)/Wikipedia上找到的信息，目前美國沒有高速列車。速度因所在位置、曲線、交叉口等而異。大多數(shù)軌道的速限為80英里/小時或更低。Amtrak火車可以達到100英里/小時。

Damian D?rhoff
That depends on the Competition
The Japanese Shinkansen operates at 320 KMH
compare that to 300 KMH for the ICE, 320 KMH for the TGV and 240 KMH for Amtrak in the USA
Of course there are slower options.
In Germany you have to decide between the ICE (300 KMH), the IC (200 KMH) and the regional Trains (160 KMH)
Some Countries have maglev trains that operate at speed of more than 400 KMH

這取決于競爭情況。
日本新干線的運行速度為320公里/小時，而德國ICE的速度為300公里/小時，法國TGV的速度為320公里/小時，美國的Amtrak速度為240公里/小時。當(dāng)然，還有更慢的選擇。在德國，你必須在ICE（300公里/小時）、IC（200公里/小時）和區(qū)域列車（160公里/小時）之間做出選擇。一些國家擁有磁懸浮列車，運行速度超過400公里/小時。

Matthew L. Kessler
Generally, a bullet train would be faster by a minimum of 100+ miles per hour. The SCMaglev reached a record of 375 mph in 2015. A regular train maximum speed, assuming you mean commuter rail is supposed to be no more than 79 miles per hour. AMTRAK’s highest speed is a small segment of track in the northeast operated by its Acela trainset which travels at a maximum allowable speed (MAS) of 150 mph. The Northeast Corridor has areas where the MAS is 125 mph.
Disclaimer:I have not read all the other answers to this question. If it comes across that I may be duplicating any it is coincidental .

通常來說，高速列車的速度比常規(guī)列車快至少100英里/小時（160公里/小時）。SCMaglev在2015年創(chuàng)下了375英里/小時的速度記錄。常規(guī)列車（如果您指的是通勤鐵路）的最高速度應(yīng)該不超過79英里/小時（127公里/小時）。美國鐵路公司（AMTRAK）的最高速度是東北部的一個小段軌道，由其Acela列車組操作，最高允許速度為150英里/小時（241公里/小時）。東北走廊的某些區(qū)域的最高允許速度是125英里/小時（201公里/小時）。
免責(zé)聲明：我沒有閱讀其他回答。如果我的回答與其他回答重復(fù)，純屬巧合。
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Raghunandan R C
Regular train usually travels anywhere between 45 to 100 mph (60 to 160 kmph). Bullet trains travel at 200 mph (320 kmph). So about twice the speed.

一般列車通常以每小時45到100英里（60到160公里）的速度行駛。而高鐵的速度為每小時200英里（320公里）。因此，大約是普通列車速度的兩倍。

Keith Barber
Eurostar does about 185mph and the uk east coast main line (london- Scotland) does 140mph max speed
Bullet trains in Asia fluctuate 155-165mph
Our now ageing IC125 does, as the name suggests, hits 125mph

歐洲之星的最高時速約為185英里，英國東海岸主線(倫敦-蘇格蘭)的最高時速為140英里
亞洲的高鐵時速在155-165英里之間波動
我們現(xiàn)在老化的IC125，顧名思義，時速可達125英里
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Chris. Paux-Courrouges
There is no such thing as a bullet train. Some trains supposed to be faster were designated as such at different times, eg in 1964 when the Japanese inaugurated the Tokaido Shinkansen, then running at 240 km/h. At that time some conventional trains elsewhere reached 200 km/h on very few stretches:

“并不存在所謂的“子彈列車”。某些被認為更快的列車在不同的時間被指定為“子彈列車”，例如1964年日本啟用東海道新干線時，當(dāng)時的最高時速為240公里/小時。當(dāng)時其他一些地方的傳統(tǒng)列車只在極少數(shù)路段上達到了200公里/小時的速度。

In the meantime there is a common understanding (at the level of UIC, international unx of railroads) that high- speed on rails covers the domain above 250km/h, for which a specific set of requirements and rules apply (regarding among others, axle load, braking, signaling, track geometry). On some lines of such high-speed lines in some countries (China, France, Spain, Germany, Italy) some of these high-speed trains run at speeds of 300 km/h and up to 350.

與此同時，在國際鐵路聯(lián)盟（UIC）的層面上，有一個共同的理解，即鐵路高速領(lǐng)域覆蓋250公里/小時以上，適用于一系列特定的要求和規(guī)則（涉及軸重、制動、信號、軌道幾何等）。在一些國家的高速鐵路線路上，一些高速列車以300公里/小時甚至350公里/小時的速度行駛。

Which seems to represent a practical limit, As shown by China, who decided to reduce their trains’ speed limit by around 10% after a first accident.
Some countries have built no high-speed rail system, but elected to improve their conventional lines as much as possible. and go for speeds around 200–230 km/h on longer stretches. This is the case of Austria or Sweden. Elsewhere conventional trains run at 150–160km/h at most.

這似乎代表了一個實際的限制，正如中國所展示的那樣，他們決定在第一次事故后將高速列車的速度限制降低約10%。一些國家沒有建造高速鐵路系統(tǒng)，而是選擇盡可能提高傳統(tǒng)鐵路線路上的速度，在較長的路段上達到200-230公里/小時的速度。這是奧地利或瑞典的情況。在其他地方，傳統(tǒng)列車的最高速度為150-160公里/小時。

子彈頭列車比普通列車快多少?