The bus number is 2525. 25+25=50. the bus has to stay above 50mph. A little interesting trivia. [This is noticeable very easy and therefore invalidates it as trivia.]

When Howard Payne realises that the camera footage is on a loop it shows a bag disappearing and reappearing. Wouldn't he notice the woman moving the bag? She would have to move the bag for it to disappear/reappear. [It's only a very small movement, easy to overlook. Regardless of the degree of movement involved, Payne isn't paying full attention to that screen the whole time - he has news broadcasts to watch, his drink to consume and so forth. All he needs that screen for is to check that the passengers are still actually on the bus. It's quite conceivable that he could miss it.]

During the final scene when the train car crashes onto the road, the way the glass shatters into very very small fragments indicates that it is not real glass, and likely sugar glass. [Or it is tempered glass for vehicle use, which is designed to granualate to prevent slicing / chopping injuries in the case of breakage - just like the glass in car windows.]

At the end of the film, a tape loop is made of the camera inside the bus to trick the villain to think that everybody's still on board. With the video equipment shown, it is simply not possible to do a seamless loop in a flick of a second. [It is possible to do a tape looping because TV crews have that equipment in there trucks, and it wasn't in a " flick of a second ", Mac tells Jack " I only have a minute of tape ", but it could've been a bit longer than a minute.]

A bus would never, ever be able to maintain a speed of 50 mph on the secondary streets of Los Angeles in the middle of the day, for any significant length of time, without smashing into hundreds of other cars (in which case, it would probably drop below 50 and explode anyway.) [It does smash into several cars at the beginning, but eventually gets a police escort allowing the bus to move more freely without endangering pedestrians and causing more damage to cars etc.]

When the police are staking out the 'drop', how come not one of them manages to catch Howard Payne getting Annie and escaping down the hole under the bin, with the money, despite the fact that the bin is being watched from every angle? [There are about a hundred cops on the scene, so he disguises himself as a police officer, knowing that they won't realize he is not really one, since many precints were likely involved in such a massive task of watching the trash can from "all" angles. That is why no one notices him. As for the hole, he didn't drop through it, he went to the subway to retreive the money that "fell through" the hole from underneath! That was the point of having the hole in the first place, so that the officers would think the money was in the trash can, while he was able to collect it from underneath undetected, and make his getaway.]

When Jack and Harry find out where Howard Payne is in the building, Jack opens the elevator door and throws himself onto the cable, and Harry then follows. However, if you look up to where they came from, the elevator door is now closed. [If you look closely at a modern elevator for a while, you may notice that the doors sometimes close automatically, all by themselves. It's like magic.]

There is no way on earth that a police officer would be taught to shoot a hostage in the thigh to 'take them out of the equation'. Anyone who suggested such a thing would likely be taken out and shot themselves. Bullet wounds to the thigh are often fatal, as an injury to the femoral artery causes massive and frequently unstoppable blood loss. Breaking the femur often leads to fat embolisms as bone marrow gets into the bloodstream and then to the lungs. In fact a broken femur is a life threatening injury in itself, and a shattered femur - a typical bullet injury - would almost always result in a total amputation. You cannot aim carefully enough to avoid the bone or artery as their position in the body varies, (as will the bullet trajectory upon impact) and it is not a character mistake - Jack states they are trained to take such steps to resolve a hostage situation. Imbecilic plotting. [You weren't watching the film terribly closely, were you. It's made abundantly clear that shooting hostages is NOT something that they're trained to do - Jack merely suggests it during one of their 'pop quiz' exchanges; Harry's incredulous reaction should be more than enough to indicate that this is not standard operating procedure. Shooting Harry may be an extremely unwise thing for Jack to do, granted, but as the central hub of your submission is that this is something that they've actually been trained to do, I'm afraid that that renders your 'mistake', well, to use your phrase, imbecilic.]

At the beginning of the movie we see Jack Traven taking Jeff Daniels character "out of the equation" by shooting him in the leg. We realise it's a serious injury as he requires the use of a cane when receiving his medal. However later on in the movie when they move in on Dennis Hopper's home, which takes place the next day, Daniels is part of the assault team and has no cane, no limp and is obviously very mobile. [The assault on Hoppers house does not take place the next day, it takes place several months later.]

In the scene where Jack tells the Captain that the gas is leaking, he says that it will be about 10 minutes before it's empty. But at the speed that the gas indicator was going down, it would be a lot less then 10 minutes. [So he mistakenly estimated the size of the hole and the amount of gas coming out. Character mistake.]

In the highway scene where the older female bus passenger panics and attempts to leave the bus by getting on the flatbed truck driven by the police, right before the explosion that kills her occurs, you can see Keanu Reeves grab her arm for a split second. There is then a cut to the explosion, then another cut back to Keanu lying on the bus floor with his arm outstretched, having ostensibly been unable to grab the lady in time. [So he managed to grab her arm, but was unable to prevent her from falling, or his grip was shaken loose by the explosion. Hardly a mistake.]

When Howard is talking to Jack on the payphone, after blowing up the bus that Jack's friend was driving, Howard says, "I want my money by 11am." Later on when Jack is trying to defuse the bomb when the bus is in the airport, Jack's watch says 5:01pm. We know the time's right as he checked it earlier. (Frame by frame required.) [I refer you to the contribution rule that states "If something requires slow motion to spot, chances are it's not a valid mistake, but there are exceptions. For example, a cameraman in shot for a few frames or something else fairly major is worth listing, but a tiny change in position or set wobble that's only noticeable by slowing the shot down won't be listed. Minor mistakes have their place on this site, but they must be noticeable in regular viewing." Please take these things into account before submitting.]

At the start when the explosion goes off, supposedly killing Dennis Hopper, you can see that the explosion actually forms a shape around the door frame and that the wall blows inwards. This is because of the individual charges placed around the door to make this effect work, in fact you can see the holes that they cause. In an explosion such as this, probably the first thing to happen would be for the door itself (the weakest point in the wall) to be blown off rather than the wall coming away with the door in it. [You have to remember that this explosion was set up by Howard Payne to make it look like he died. He may have deliberately rigged the charges around the door to make it look like a bigger explosion than it actually was.]

Halle Berry was the first choice for the part of Anne. [According to the IMDb, the part was written for Ellen DeGeneres (and the role was a lot more comedic). Halle Berry was just one of the people to turn it down.]

Howard Payne says to Jack at the beginning when they are talking on the phone, that if the bus drops below 50mph it blows up, so how come when we finally see the bus explode at the airport we see the speedometer on the bomb explode at 50 not below it. [Probably because the speedometer on the bus is analogue and the speedometer underneath is digital and more accurate. As soon as the speed hit 49.999 mph it blew up.]

Right after the bus makes the jump over the gap in the freeway there is a shot of the front of the bus. If you freeze frame you can only see one person in the whole bus - the driver. Jack and all the passengers magically disappears. [We see all the passengers bracing themselves before the jump - they're bent down low enough that you wouldn't see them from outside. Jack is holding closely onto Annie, bracing her, so, from the outside, you'd only really see one shape.]

On the bus, when Jack is reasoning with the guy who has the gun, the black guy tackles, then struggles with him, and the guy with the gun shoots at Sam (the driver). In slow motion, the glass behind Sam doesn't break away and smash, it only shatters a slight bit. A few shots later, when Annie is driving the bus, the glass is now completely smashed and only a few bits remain in the frame. [Yes this is true, once the glass is shot, it shatters making it is very weak. It would only take a light bump and the whole glass pane would break apart. After all the "action" going on the bus (passengers rushing to help Sam, the bus swerving all over the place) it wouldn't be surprising if the glass pane got knocked out of place.]

When we see Howard Payne stick the security guard with a screwdriver, the guard seems to look up before impact, like he knew it was coming. [Speculation, it's not a mistake for someone to realise that they are being approached.]

At the beginning of the film when Jack is talking to Howard Payne on the phone he hangs up and runs for 2 seconds, yet in the previous shot he ran quite a distance to catch up to the bus, this means he's very fast at running or someone moved his jeep further up the street. [He didn't run that far to reach the bus and he had to walk back to answer the ringing telephone.]

If you look at the bus jumping in slow motion, you will see that there is no-one inside the bus. [In the previous scene inside the bus, Jack tells the passengers to hold on, and if you notice they all bend forward to protect themselves, this is why you can't see anybody from the outside shot, because they are bent down.]