What Are Interlocking Systems?
There are two devices commonly called interlocking systems. The first is a valuable tool for railroads to prevent train collisions. The other is a system developed to prevent drinking and driving by people who have a DUI conviction. The context in which you hear the term determines the definition you are looking for. Interlocking systems for railroads are found all over the world. Thirteen states use these DUI prevention systems as of 2011. Medical professionals may be familiar with the term in relation to a system of vessel occlusion.
Other People Are Reading
-
Railroad Interlocking Systems
-
A complex system of signals prevents trains from entering sections of track at the same time. For railroads, interlocking systems are a series of signals designed to prevent more than one train from entering a junction or crossing at the same time. The system is designed not to give any train the all-clear signal to proceed unless the track can be proven to be clear of other traffic by the system. These systems are designed to work in sequence, so that one signal cannot operate until the preceding ones have been cleared.
Other Features of Railroad Interlocking Systems
-
In addition to signals, other features of interlocking systems include switches and derails designed to keep trains clear of each other. All of the switches must be properly set before the system gives an all-clear signal to an approaching train. As soon as one switch is set to allow a train to enter a specific section of the track, all of the other switches are locked into position to prevent other trains from entering. Most of the interlocking systems in use today are electronically operated.
-
Interlocking Systems to Prevent Drinking and Driving
-
Judges in some states can deter drinking and driving by sentencing an offender to the use of an ignition interlocking system on his vehicle. Ignition interlock systems are installed on automobiles to deter drinking and driving. If a person is convicted of driving under the influence of alcohol judges in 13 states have the option of sentencing them to install an ignition interlock system on their personal vehicle. The driver must blow into the device before the vehicle cranks. If a blood alcohol level above the legal limit is detected, the vehicle does not start.
Pros and Cons of Interlocking Systems to Prevent DUI
-
In many cases, the installation of an ignition interlocking system allows a person to return to his normal life and continue working instead of losing his driver's license. It is an option for judges to keep people out of jail and allow them to be productive citizens. Mother's Against Drunk Driving supports the use of these devices. Opponents of the use of interlocking systems are concerned that using mouthwash could register as an attempt to drive while drinking. When the system detects an attempt to start the car with an illegal blood alcohol level, the offense is reported to the driver's probation officer. Other arguments against the device include the ability to cheat, such as having someone else blow into the ignition interlock for the drinking driver. The cost of installing the device in the vehicle is the responsibility of the driver.
Boston Scientific's Interlocking System
-
The company Boston Scientific manufacturers medical equipment. One such device is the Interlock Fibered IDC Occlusion System. This system is marketed to doctors as an easier way to place coils to block vessel hemorrhages, gastrointestinal bleeding, aneurysms and other medical procedures that require the precise placement of coils.
-
References
- Photo Credit Stockbyte/Stockbyte/Getty Images Fox Photos/Valueline/Getty Images Jupiterimages/Photos.com/Getty Images
