People believe many things about traffic that are false. Here are some of them, with the reasons why they are false:
You can make the green light come quicker by occasionally letting your car
FALSE! This is like pushing the button on the elevator repeatedly and thinking that this will make it come faster. Once you have been detected, there is nothing you can do. The light deals with traffic in a predetermined order, and must finish with one stream before turning to another.
You can do something that will cause the light to fail to turn green. If you creep up beyond the stop line, you are no longer in the detection zone. The signal thinks you turned right on red and forgets you entirely. Then, another car must arrive to retrigger the detector before the light can turn green.
Because left turns go first at traffic lights, they should go first at ALL-WAY-STOP intersections.
FALSE! This cuts down the traffic capacity of an ALL-WAY-STOP. It is much more efficient for a left turn to start moving just after the oncoming car starts to move, and then tuck in behind it. The traffic light puts the left turns first to avoid yellow-trap -- a dangerous condition -- and because it can more efficiently use green time that way. Where both approaches have left turn lights that go first, and one empties out earlier, then a "smart" light can release one straight through movement earlier, since nothing blocks it.
Vehicles coming toward me are moving, but the light is still red. The drivers must be breaking the law.
FALSE! They really have a green. Signals with left turn arrows, emergency vehicle pre-emption, railroad pre-emption, or queue-discharge can release traffic from one approach while keeping the other approaches stopped. The "smart" light mentioned above does this. The pre-emption and discharge sequences are trying to clear out traffic in one direction on purpose, to clear the way for an ambulance, a fire engine, the police, a train, or stopped traffic on a freeway.
To turn left at a traffic light, wait in the intersection until a gap appears in traffic, or until
the light changes.
FALSE! In some cases, your light can turn yellow and then red without a gap appearing in the stream of traffic, leaving you frozen in the intersection. The stream may continue after your light turns red, causing the yellow-trap hazard with you in it. Wait at the stop line until you can turn.
The yellow light is for making left turns.
FALSE! It is actually dangerous to make a left turn during the yellow at some intersections. Yellow-trap can catch you here. Always wait at the stop line, until a gap appears in the oncoming stream, before turning.
Some drivers love to block traffic by going slow.
FALSE! If the vehicle ahead is going slow, there is usually a SAFETY reason. If you are following too close, or have your bright lights on, that might be the reason. If so, correcting these conditions will cause the other vehicle to speed up. Other reasons might be related to the type of vehicle ahead, such as height, width, weight, grade, center of gravity, sight distance, a load that suddenly came loose, or lack of tire traction. Also, check to see if the speed limit has changed, and if the driver might be drunk.
Widening a street to four lanes is best for handling more traffic.
FALSE! The capacity for a four-lane undivided road cannot exceed 2600 vehicles per hour in each direction. On the other hand, a pair of two-lane one-way streets can carry 3600 vehicles per hour in each direction. In either case, the capacity must be reduced by the time signals on the street is red. Also, 500 vehicles per hour must be subtracted for each line of curb parking allowed on the street. The reason a one-way street works better is that there are no cars making left turns through gaps in traffic.
Higher speed limits waste more fuel than anything else does.
FALSE! Once a car gets up to speed, the only energy needed is that to overcome friction. What wastes fuel is slowing a vehicle to a stop, and then accelerating it again. Traffic jams and STOP signs are the two biggest fuel wasters.
Building a new highway generates more traffic.
FALSE! Most of the traffic that "appears" when a new road is built comes from three sources:
Stop signs are the best way to control speed in neighborhoods.
FALSE! This actually tends to increase the speed between intersections. The best way to control speed in neighborhoods is to provide enough good fast roads for through traffic, so drivers aren't tempted to take shortcuts.
To make the car ahead speed up, get as close to it as you can.
FALSE! That is a good way to cause an accident. It also causes good drivers using the space-driving system to slow down. You should always stay at least 2 seconds of travel time behind the car ahead, and adding additional seconds for high speeds, bad weather, and slick roads.
Bicycles are pedestrians.
FALSE! Bicycles are vehicles, and are required to obey all Indiana laws governing moving traffic. The only way a bicycle can be a pedestrian under the law is if the rider dismounts and walks the bike.
Bicycles have special priority over cars.
FALSE! Bicycles are classed as vehicles, just like cars, and Indiana law requires all bicycle riders to obey all Indiana laws governing moving traffic.
Pedestrians always have the right-of-way.
FALSE! There are several cases where pedestrians must yield to other vehicles:
Pedestrians should always keep to the right.
FALSE! It depends on where they are. On sidewalks and in crosswalks, they belong on the right. But when walking on the edge of a road with no sidewalks, they should be facing the traffic, usually on the left side. The general rule is to keep right, unless walking along a road without sidewalks.
Joggers belong on the sidewalk.
Joggers belong in the street.
Skaters belong on the sidewalk.
Skaters belong in the street.
ALL FALSE! Joggers belong on the track, and skaters belong on a rink. Neither is a legal form of transportation. Both may be on a sidewalk, as long as they revert to being pedestrians when crossing streets or when near other pedestrians. Skates, skateboards, tricycles, toy wagons, and push cars are considered by the law to be toys, and cannot legally be ridden on the street.
Speeding is the major cause of accidents.
FALSE! Speeding is usually stressed by government, because it is easier to convict speeders and get fines (revenue for greedy government). The real causes are:
Traffic lights prevent accidents.
FALSE! Traffic lights prevent accidents only when they are warranted, and only when they are properly installed and operated. Any signal that causes yellow-trap, or makes it impossible for a driver to stop in time, will cause accidents. Accidents will also be caused by drivers following too close at traffic lights.
Parallel parking is best on high traffic streets.
Angle parking is best on high traffic streets.
BOTH FALSE! Off-street parking is best for high traffic streets. Parking at the curb subtracts 500 vehicles per hour from the lane next to it. If the parking area was a lane, the street could handle 1800 more cars an hour. Parking lots should have one-way drives and 45-degree angle parking, with stop blocks or sidewalks between the rows to keep vehicles from exiting in the wrong direction.
Elected officials are the best persons qualified to make traffic laws.
FALSE! Election to office does not impart training in traffic engineering. Trained engineers are much better equipped to make decisions involving the safety of moving traffic. Politics should be kept entirely OUT of the process of designing the best streets and roads.
Politicians believe even stranger things about traffic that are false. These are examples of the reasons why politicians should not be in charge of traffic control:
Motorists will speed, unless the police work hard to prevent speeding.
FALSE! Given a lack of hidden hazards, most drivers will drive the design speed of the road.
The problem occurs when politicians set speed limits slower than the design speed of the road. They claim that they do this to make the road "safer." But the real reason they do this is an ulterior one: More traffic fine revenue for the budget. This conflict of interest is one of the main reasons why traffic control should be taken away from politicians.
Synchronizing traffic lights works on all streets.
FALSE! Traffic lights can not be progressed on all streets (the correct term is progression, not synchronization). The following are constraints on how well progression will work:
Slowing drivers down saves energy.
FALSE! If drivers slow down of their own volition, it will save energy, as long as the slowing down doesn't require shifting to a lower gear. But if the following methods are used, the slowing down wastes energy, instead of saving it:
Slow driving saves energy only when it is done at a uniform speed and direction. And it really does not save that much.
Metering traffic solves congestion problems.
FALSE! Metering doesn't prevent congestion. It just moves the congestion to the metering locations. Nothing is a substitute for providing enough capacity for the demand. Note that zoning often increases congestion by increasing the length of trips to and from work.
Mass transit solves congestion problems
FALSE! Mass transit doesn't solve congestion problems, for two reasons:
Red-light cameras improve safety.
FALSE! Red-light cameras improve only the coffers of greedy local governments. In order for the cameras to pay for themselves, governments have been shortening yellow lights to catch more "violators." In addition, the cameras don't identify the driver. It is wrong to issue the ticket to the owner. Here is another main reason politicians should not be controlling traffic. Proper design is the way to prevent red light violations:
Advance warning of the end of the green increases the hazard.
FALSE! It increases the hazard only when it is implemented wrong. The mistakes made in this area are:
The advance warning, if given, should be in the form of a distant signal.
Overdesigning the road makes it much safer.
FALSE! Overdesigning the road makes it safer - if the speed limit is set to the actual design speed. The trouble with overdesigning occurs when the facility is designed for one speed, but signed for a lower speed. This causes a speed differential, as half the drivers obey the speed limit, while the other half of them drive at the real design speed of the road. The speed differential is more dangerous than the safety gained by overdesigning the road, and enforcement will not be able to cure either the speeding or the speed differential.
One engineering fact that emerges in most speed investigations is that, if more than 15 percent of the drivers are speeding, then the speed limit is wrong, not the drivers. Overdesigning the road almost always causes this effect. And again, enforcement will not be able to cure it.
There is nothing wrong with passing traffic laws for non-traffic purposes.
FALSE! Passing traffic laws for non-traffic purposes causes obedience and enforcement problems. Speed limits should always be set for the design speed of the road, not the political whim of a layman politician. Stop signs and traffic signals should be installed where they are needed, not because a pressure group wants them. Using traffic laws for other purposes dilutes the perceived necessity of such laws for safety. When people see the phony uses of traffic laws for ulterior motives, they then don't trust the necessity of other traffic laws passed to prevent real dangers.
One "traffic" law that belongs in the trash can is the law that lets government suspend driver's licenses to collect money owed to a government. Government is diluting the severity of a license suspension by using it as a substitute for a collection agency. This instead causes people to ignore license suspensions, so they drive while suspended. Governments should use real collection agencies to collect any money owed them, rather than taking away driving privileges to satisfy their greedy desires for more money. Legislators who pass such laws should be thrown out of office for violating the public trust. Traffic fines should NOT go into general funds for governments to spend. They should go into special funds to reimburse crime victims.
Blanket speed limits for certain classes of roads or types of jurisdiction reduce costs, with no
FALSE! Blanket speed limits do reduce the costs of signing. But there are several problems with such a method of administering speed limits:
Speed limits should be signed in such a way that any driver turning onto a road can find out the speed limit before violating it. Too often, governments don't think of any traffic other than traffic going straight on the road. This mistake is especially hazardous when a government signs a school speed limit at only the main entrances to the speed zone.
This is a good argument for the abolition of municipal governments. There is nothing necessary a municipal government does that a county government can't also do.