Goofs

Inside the garage a man walks by a pair of tires that appear to be 12-feet tall. When the bus is outside, the tires are about the same size as those on any regular truck or bus.

When Dan and Kitty are in the back of the pickup truck, they (and their clothes) are dry. Both should still be wet since they've just left the flooded kitchen.

In the kitchen, Kitty is laying on her stomach unconscious facing the front of the bus and in the next two shots, she is on her back facing the rear. However, this is also a continuity error within an error. In the second shot of her, she is in the center of the floor and in the last shot, she is closer to the counter.

Before testing the AWM (automatic washing system) there are 16 'soap' bars in the dispenser of which three are used leaving 13.

A few minutes later during the high-speed test there are 16 again.

The bus driver tries to disarm the bomb by going into a hatch just in front of the rear tires. When he fails to disarm the bomb there, it explodes. For the rest of the movie, the bomb damage is just behind the rear tires in a place the bus driver could not have reached.

The number of wheels and axles on the rear section are insufficient for the weight of the rear section. The weight per axle would exceed that of highway safety laws. It is so overweight that the tires and axles could fail.

When the bus is hanging over the cliff, it would not rock. The weight of the pool water and nuclear engine would keep the rear section firmly on the ground. The articulated section would break, sending the forward section down the ravine.

The automatic tire changer that drops the old tire on to the road would violate highway safety laws. In real life, car occupants have been killed by spare tires than have fallen from trucks.

After crashing into the bus, the Chevrolet pickup's front end is damaged beyond recognition from just crashing through a glass window. No metal vehicle would suffer that amount of damage from just crashing through a pane of glass.

The model year of the Chevrolet pickup truck is 1954. The character Dan Torrance identified it as a "'53 Chevy pickup".

When the bus is being pulled out of the garage, the top of the front section just fits under the top of the door opening, but the back section of the bus includes an observation dome that is taller then the front of the bus. It could've never been pulled out of the garage.

When they show the bus speed increasing on the speedometer. The speedometer used appears to have been taken from an old passenger car. The odometer also appears to have been rolled to the miles shown. The odometer only has five digits which at that time was common for passenger cars. Truck and bus odometers would have six or more digits because they always racked up many more miles than cars.

The Chevy pickup that crashes into the bus has obviously been damaged before it crashed.

When Harold Gould's character is on the phone in this outside hospital room, the green business phone he's using has a single, lit outside-line button but notice that it's not pushed down (none are) revealing he's not in an actual call.

When they are instructing the drivers to increase the speed of the bus, they pass the same scenery multiple times.

They are using a small propane powered utility tractor to pull a bus that is supposed to weigh 75 tons out of the garage. The would need an aircraft tow tractor to pull something that heavy. The tractor probably cannot even pull the prop vehicle which consists of two diesel truck units. It is likely that the on-board diesel engines had to be used to help the tractor move the bus out of the garage.

The dial on the bomb's timer is divided into 60 minutes and its face has a second and a minute hand (which can be seen to move slightly as the seconds tick by).

Alex planted the bomb at night, however, when the bus starts off in the morning the clock shows that only 27 minutes have elapsed with about 33 minutes remaining.

The next time it is shown it is night time again, and yet the timer shows only about another 28 minutes have passed.

When the bus is seen travelling along the highway from the front, the co-driver (right side of the bus) is a dummy. Possibly an inspiration for Otto in Airplane! 4 years later.

During the entire trip from New York to Denver, the only scenery we see is that along mountain roads east of Los Angeles.

At the very end, just before the the bus splits, they are supposedly heading into Denver. However, for just a moment before the "Denver 25 mi" sign, you can see a California state highway sign for CA2, the Angeles Crest Highway, north east of LA.

When they are loading the bus for the trip that begins in Midtown Manhattan, the bus is parked near a bus terminal. The only bus terminal in Midtown Manhattan is Port Authority Bus Terminal. The terminal used in the movie is not the Port Authority Bus Terminal.

This bus is supposed to be departing from midtown Manhattan and traveling to Denver by way of regular highways. This bus appears to be 20 feet tall. It would not fit under any of the many overhead clearances along the roads, especially those of any of the Hudson River crossings from Manhattan to New Jersey.

When it is discovered that there is a bomb on the bus, the obvious course of action would be to stop the bus and let all the passengers off to ensure their safety, yet the crew choose to try to disarm the bomb while the bus is still in motion.

The bus is shown ejecting luggage to lighten the front end of the bus, which is dangling over a cliff. The luggage compartment doors are depicted as opening downward, which would be a very impractical design for loading and unloading luggage on level ground.