When you are in the market to buy a GPS device, you should know that there are certain factors that can help you decide which one would be best for your needs.
First, it’s necessary to understand what type of activities will require GPS technology. This will help you understand which device is most appropriate for your needs.
Second, it’s important to consider the amount of time that you’ll spend using the device. If it’s just an occasional tool or if you’ll be carrying it with you all day long, then select a lightweight model that is small and easy to carry.
If this is not an occasional tool but rather something that will be relied upon heavily, then choose a more robust model with better battery life and superior performance capabilities.
However, here we will dig down and find how to choose the best professional gps for professional truck drivers.
How to Find the Best professional gps for professional truck drivers
GPS is a device that helps you find your location. There are different types of GPS devices available in the market. Some of them are made for outdoor activities, some for marine activities, and some for sports.
You need a GPS to locate yourself when you’re hiking or fishing, but there are other reasons that you might want to use it while traveling or even while going about your daily life. A smartphone with the GPS app preinstalled is one of the most common options.
However, it can be expensive because it needs to be paid for every month along with data plans and fees from other apps downloaded on your phone.
However, if you are looking for the best this general guide will help you a lot, no doubt.
GPS is a set of instruments that use satellites to provide navigation, which includes the GPS tracker.
GPS receivers provide location and navigation information to users. Some receivers offer an integrated map and information service for their users while others do not.
Unlike the GPS devices that only report latitude and longitude, some GPS devices also give you information like grid reference, altitude, and distance.
This is especially useful for people who are hiking because it can help them determine their location on top of a hill or mountain.
Some GPS devices like the Garmin Edge 820 also include a digital map feature that can be zoomed in to show you where you are on the map.
On Screen GPS Mapping
In general, the size of GPS maps is too small. The scale of a map is not always accurate and it can be hard to read. This happens due to the fact that most GPS devices are designed for cars and not for pedestrians.
The introduction introduces a topic related to how GPS devices can be difficult to use in some cases because they don’t provide adequate information on their maps.
Consider the battery life of your GPS
GPS devices don’t last forever. But if you ask around, you might find a battery that lasts over a couple of years.
Battery life is a significant factor when choosing a new GPS device – many people would rather purchase a cheaper model with the intention of buying the same brand again soon, but this may come at the cost of more frequent replacements.
When considering battery life, it’s best to look at how long your device will last on one charge and how often it’s likely to need recharging.
The Build Quality of your GPS you are Looking for
Gps technology has improved significantly in recent times. Gone are the days when we used to come across low-quality gps devices that were difficult to use and unreliable. Today, GPS manufacturers offer high-quality devices with advanced features at competitive price points.
The build quality of the device you buy is very important so that you do not have to replace it frequently or spend a lot of time on repairs, which is why it’s important to know how to find the best GPS device for your needs.
A magnetic compass is a tool that helps human beings to find their way in the direction of the north. In fact, it is one of the earliest inventions that helped people to navigate in a different environment.
Magnetic compasses were used among ancient civilizations, including the Chinese and Indian cultures. They were used to measure and maintain a calendar system along with other complicated tasks.
While today we have better navigation tools such as GPS, there are still some occasions when you need to use a compass. If you are interested in finding out how to find your way using a compass or what kind of device you should get, this article will help you out and make sure your professional gps for professional truck drivers
Unit size vs screen size of the GPS
Before making a purchase decision, consumers should consider both the size of the unit and the screen size.
Many buyers choose the 10 inch screen device for its convenience and because it can be easily pocketed or clipped on a belt or a pocket.
When you plan to hike a mountain trail, you need a GPS device. One of the questions people ask is what type of GPS should they purchase? Size is one factor that must be taken into account when deciding which GPS to buy because not all devices have the same dimensions.
Nowadays, people are more likely to get lost with the introduction of new places and changes in roads. A GPS device can help you find your way back home, but it also comes with some advanced features like an e-book reader, camera, etc. Some of us are discussing below.
When it comes to finding the best GPS device, it is important to be aware of your needs. The barometer is a useful feature for a GPS of any action.
The function of a barometer is to measure changes in air pressure at different altitudes. It is also used in weather forecasting when predicting weather patterns, such as low-pressure systems or fronts.
The electric compass needs the power of the same material that powers your device to work. It can be powered by a battery or an external power source like a USB or solar panel.
The magnetic needle is made of iron and because it is magnetized, this iron will always point north. The needle itself measures 3 cm long and 1 cm wide. It uses size 2 lithium batteries which can last up to 10 hours in total.
It’s not necessary for the electric compass to be paired with a GPS device – you can use it independently because it can measure the distance traveled accurately without help from other devices.
Wireless Transmission System
Consider using a GPS device that doesn’t require wireless transmission. These devices use a cellular signal instead of Wi-Fi or Bluetooth. You will be able to see your location on a map and get directions without worrying about not being able to connect to wireless transmitters.
This device is best for people who don’t have enough data or need an affordable option for navigation. Other options may also be worth considering, depending on your needs and budget.
The USGS map is the best option because it offers great resolution and it is fully up-to-date.
The GPS device you choose will depend on your needs. If you are looking for a device that can provide you with turn-by-turn navigation, then go for one that has built in maps. For those who are looking for something more basic, then they should go for one that comes with an SD card slot.
You don’t want to buy the wrong GPS unit! Make sure to read reviews or ask people who have got experience with these devices before buying one because they may be able to provide valuable information about the product.
Third party maps and software compatibility
GPS devices are an important part of our lives and we want to make sure we have the right device for the job. When you’re buying a new GPS device, you need to consider things such as software compatibility, Third Party maps, and data tracking.
It is important to not just look at compatibility with your current apps but also those that might be available in the future. Software compatibility is better than ever and it has become easier to switch software providers on your existing device.
There are many things you should consider when choosing a GPS device: what features will it offer, how much does it cost and what is the battery life?
If you want clear, accurate directions with no hassle then choose a GPS device with built-in maps such as TomTom or Garmin. These navigation systems incorporate features that allow users to easily create their desired route while ensuring that the driver stays on track.
Memory and waypoint capacity
The better memory device offers more information and waypoints and memory translates into battery life as well as increased performance on the go.
The heavier a GPS device is, the more expensive it usually becomes. This is because heavier devices often come with more advanced features such as topographic maps or satellite imagery that need to be maintained at all times.
If you have been searching for a GPS device that works well, you should definitely check out the features of a geocaching GPS.
Outdoor enthusiasts and local treasure hunters have been using geocaching GPS devices to find their lost treasures since 2003. Geocaches are constantly on the lookout for new geocaches.
If you’re looking to join in on the fun, you can start with this list of best-selling geocaching GPS devices.
Digital camera with GPS
Many people today use cameras with GPS to keep track of their traveling and outdoor activities and this is because the modern camera these days can be used as a GPS device.
The best model for a digital camera that has GPS capabilities would be the Sony Alpha A6500. It is an excellent digital camera that has features like 4K video, wide angle lens, and more.
Satellite Messenger Capability
A satellite messenger capability is a feature offered by most modern GPS devices which provides an additional layer of security.
Satellite messenger capability can be used in both personal and professional settings. For example, if you are traveling to a foreign country where the local language is not spoken, you can hire an AI writing assistant to find the best GPS device for you.
Ease of use of the GPS
If you plan on using the GPS constantly, then it matters less what kind of device you get as long as it has navigation capabilities and accuracy.
With the increasing popularity of GPS devices and apps, there is a need for more and better ways of tracking and this is where the technology of GPS devices comes into play.
The GPS device you choose should be able to provide accurate location data, fast speed reading, and detailed map information. Choose a GPS device that has a powerful battery with a long-lasting storage capacity.
Navigation Point to Point
The navigation point to point is a simple and reliable way of navigating, but it is not the fastest option. It uses a GPS device that you place on the dashboard of your car and then provides directions through map data.
If you’re willing to spend more money, then you can get a device that has built-in voice commands or even one that’s connected to Apple CarPlay or Android Auto and a navigation point-to-point system.
Some GPS device offers some useful accessories. So check the accessories of your desire model.
GPS systems are the most widely used navigation devices for getting your location. They are also known as auxiliary antennas because they use satellites to get your location.
The main benefit of these devices is that they can provide accurate and continuous positioning anywhere in the world. They can also be used in remote areas where other navigation services like GSM or cellular signals cannot reach.
Mounts and Cases
Some device provides mounts and cases also. They are useful.
An important factor to consider in a GPS watch is whether it has a mount and a case for it. Some watches do not offer the ability to choose between two different types of mounts or cases.
A mount can be very fragile and may not be able to withstand the rugged terrain, whereas a case can protect the watch against shocks and falls.
A GPS watch can either come with just one type of mount or case or both types, depending on the model that you choose. There are many styles of mounts and cases available in today’s market. These include straps, loops, clips, belts, tethers, and brackets – each with its own pros and cons.
Top 10 best professional gps for professional truck drivers
Here are the top 10 professional gps for professional truck drivers we picked and recommend.
1. 9 inch GPS Navigation for Truck Car, GPS for Truck Drivers Commercial, RV Trucker GPS Navigation System for Trucks, Free Lifetime Map Updates, Spok
- 【Free Lifetime Map Updates】Preinstalled with the detailed 2021 latest maps of North America with free lifetime updates, include USA Canada Mexico Maps. If you would like to update the latest map(or EU,UK, Ireland, Australia, etc), please contact us ,Get the latest map by connecting LOVPOI GPS Navigator to the Windows pc, or use an external TF Card for map update (if the system is not compatible with Mac ).
- 【9 inch BIG Screen】LOVPOI Trucker GPS navigation system with 2D / 3D navigation maps, the display was clear and accurate. The professional GPS navigator with bright 9 inch large Touch Screen for truck drivers is easy to use clear and sensitive, resolution 800 x 480.
- 【Advanced GPS navigator】LOVPOI Truck GPS navigator Customized truck route for the size and weight of your truck, Plus alerts for upcoming bridge heights, weight limits. intelligent voice Alerts for dangerous curves, speed changes, speed cameras, railroad crossings, animal crossings, traffic lights. And support Multiple Vehicle Modes, including Car, Truck (include Truck Commercial/semi Truck), RV (Motorhome), Ambulance, Bus and Taxi.
- 【BEST NAVIGATION 】You can Choose from a selection of over 40 languages voices that will Spoken turn by turn Directions, so you don’t have to look on the GPS screen all the time. FM Amplify volume function（NO radio）: it can transmit the navigation audio into the audio of car, increase the volume of navigation broadcast to make it clearer. It makes your driving safer, reduce fatigue driving, away from the ticket, Just Enjoy Your Driving.
- 【LOVPOI SUPPORT】LOVPOI established professional technician team in the United States , supply regular maps upgrades , and provide answers to any questions asked. *Note: after receiving GPS navigation, please use the car charger to fully charge then use. If the satellite signal can not be searched, it may be because of the reason at home, please search the signal in outdoors again.
2. OHREX GPS Navigation for Car Truck RV, 7 inch Truckers Trucking GPS Navigation System, Truck GPS Commercial Drivers, Free Lifetime Map Updates, Spe
- 【World Life Cycle Map, PRE-LOADED USA Canada Mexico Maps】 Pre-installed with the 2021 latest North America Map, include USA Canada Mexico Maps, which has 2D / 3D map display. If you need to update the latest Map, please contact us to download. (Downloadable but not pre-installed maps: Europe, UK, Ireland, Australia and so on)
- 【Lifetime Map Updated for Free】 Get the latest map by connecting OHREX GPS Navigation to the Windows pc. You can also use an exteranl TF Card for map update (with Mac & Windows system). Lifetime Map is free updated without Ads . You can regularly download latest data for maps, speed, and points of interest.
- 【NAVIGATION WITH CONFIDENCE】 OHREX 7 inch GPS Navigation with detailed maps and turn-by-turn directions that speak street names loud and clear through the speaker. With OHREX GPS navigation system, you will never miss a turn or have to make sudden lane crossings. Support: (1)Postcodes, Address, Coordinates & POI (2) Driver Alerts, Active Lane Guidance assist, Active Speed Camera Detection (3) Street name Broadcasting, Turn-By-Turn Real Voice Broadcast.
- 【PROFESSIONAL GPS NAVIGATION】 OHREX probably is the best 7 inch Capacitive touch screen GPS Navigation for Cars and trucks. (1) Intelligent Route Planning Fast & Economical. (2) Fast & Accurate GPS Tracking. (3) Current Speed, Lane Guidance & Estimated Arrival Time. (4) This is customized to provide better routes for your chose mode and avoid roads with width/height/weight restrictions. (5) Multiple Vehicle Modes, including Car/ Truck/Motorhome/RV / Emergency/ Bus/ Taxi.
- 【PROFESSIONAL SOLUTION】Our GPS navigation supply regular maps upgrades and any question inquiry. USA local brand, established professional technician team in the United States, have been recognized by our customers.
3. LOVPOI GPS Navigation for Car, GPS for Truck Drivers Commercial(7 Inch), 2021Map with Free Lifetime Updates, Auto RV GPS Navigation System, Spoken
- 【Free Lifetime Map Updates】Preinstalled with the detailed 2021 latest maps of North America plus free lifetime updates, include USA Canada Mexico Maps.If you would like to update the latest map(or EU,UK, Ireland,Australia and so on), please contact us ,Get the latest map by connecting LOVPOI GPS Navigator to the Windows pc, or use an exteranl TF Card for map update (if the system is not compatible with Mac ).
- 【 Easy to use】LOVPOI navigation system which has 2D / 3D navigation maps, the display was clear and accurate. easy to use professional GPS navigator with bright 7.0 inch Touch Screen, The large screen is clear and sensitive, resolution 800 x 480.
- 【Advanced GPS navigator】LOVPOI GPS navigator Support Multiple Vehicle Modes, including Car,Truck(include Truck Commercial/semi Truck),RV(Motorhome), Ambulance, Bus and Taxi.For example truck mode: Customized truck routing for the size and weight of your truck, Plus warnings for upcoming bridge heights, weight limits. Driver alerts for dangerous curves, speed changes, speed cameras, railroad crossings, animal crossings, recognizable landmarks, buildings and traffic lights.
- 【BEST NAVIGATION 】Choose from a selection of over 40 languages voices that will provide you turn by turn voice navigation, so you don’t have to look on the GPS screen all the time. FM Amplify volume function（NO radio）: it can transmit the navigation audio into the audio of car, increase the volume of navigation broadcast to make it clearer. It makes your driving safer, reduce fatigue driving, away from the ticket, Just Enjoy Your Driving.
- 【LOVPOI SUPPORT】LOVPOI established professional technician team in the United States , supply regular maps upgrades , and provid answers to any questions asked. *Note: after receiving GPS navigation, please use the car charger to fully charge then use.If the satellite signal can not be searched, it may be because of the reason at home, please search the signal in outdoors again.
4. Garmin dezl 580 LMT-S, Truck GPS Navigator with 5-inch Display, Free Lifetime Map Updates, Live Traffic and Weather
- 5.0” truck navigator with maps of North America, Plus free lifetime map updates and free Live traffic
- Customized truck routing for the size and weight of your truck, Plus alerts for upcoming Bridge heights, weight limits.Display resolution:480 x 272 pixels
- Easy break planning with timely notifications for breaks, Plus up ahead road signs to suggest nearby restaurants, rest areas
- Truck & trailer services directory; even filter truck stops by brand or amenity such as “flying J” or “Showers”
- Control dēzl with your voice, and enjoy Bluetooth hands-free calling and built-in Wi-Fi for easy map. This USB mass storage device is compatible with Windows XP or newer and Mac OS X 10.4 or later
5. GPS Navigation for Car Truck Drivers Xgody 7-inch Navigation Systems for Car with Voice Guidance and Speed Camera Warning 2021 Americas Maps Free L
- 🚙【Accurate GPS Navigation Signal】 This Truck GPS System is based on offline navigation, which must work based on the active GPS signal. The built-in GPS chip works without a network, so you don’t have to rely on your phones and cellular connectivity and the phone is free to use.🚗Note: If the satellite signal can not be searched, it may be because of the reason at home, please search the GPS Navigation signal outdoors again.
- 🚛【Lifetime Map Updated for Free】 Xgody 7-inch Navigation Systems has pre-installed with the 2020 latest North America Map, including USA Canada Mexico Maps, which has 2D / 3D map display. If you need to update the latest Map, please contact us to download it. (Downloadable but not pre-installed maps: Europe, UK, Ireland, Australia, and so on)
- 🚌【7inch GPS Navigator for Car Truck】7-inch, high-resolution touchscreen with a high resolution of 800 x 480 pixels, 8 GB MEMORY 256 MB RAM. The truck GPS navigation system has plenty of room for you to storage the maps and materials, and also comes with Car Charger, USB Cable, Back Bracket, Suction Cup Mount, Sunshade. Even It is Also Clearly Visible in the Sun, High Definition, Making Driving Safer.
- 🚕【GPS Navigation Helps You Avoid Danger】Car GPS Navigation System has a Voice Steering System (multilingual Version). Receiving Upcoming Sharp Turn Alerts, Speed Limit Reminders and Height Limit Reminders, Red Light, and High-Speed Camera Voice Notification. And Customized truck routing for the size and weight of your truck, avoiding the roads which have width restrictions or height restriction or weight restriction.
- 🚙【After-sales Service】：🚗 Note: Trucker GPS Navigation maintenance: after receiving it, please use the car charger to fully charge then use. XGODY 7 inch GPS Navigator supplies regular maps upgrades and any question inquiry. Our company established a professional technician team to solve various problems for our customers. If You Have Any Questions About This Product, Please Contact Us Via Amazon. We will reply to You within 24 Hours.
6. 9inch Truck GPS Big Touchscreen Trucking GPS Xgody GPS Navigation for car Navigation 8GB ROM SAT NAV System Navigator Driving Alarm Lifetime Map Up
- 【9inch GPS Navigation for Car】: XGODY X4 brings 9-inch high-resolution and large screen, brighter with the resolution of 800×480, Clearer screen display, which gives you a better visual experience. You can customize a better route according to your vehicle’s weight, length, height and width, thus avoiding the roads which have width restrictions or height restriction or weight restriction, etc.
- 【Advanced Lane Guidance】 : XGODY Trucking GPS never miss your exit or turn with Advanced Lane Guidance. It shows you exactly which lane to take before you approach an exit, turn or difficult intersection—so you can stay on the right path.
- 【Car GPS Navigation offers Life-maps Updated】：XGODY X4 comes with All America maps, including Argentina, Brazil, Canada, Chile, Colombia, Costa Rica, Mexico, United States. If you wanna update maps or maps of other country, please be free to email us via amazon.
- 【REAL VOICE NAVIGATION】: Choose from a selection of voices that will provide you turn by turn voice navigation. Real man or woman voice broadcast you don’t have to look on the GPS screen all the time. It makes your driving safer, reduce fatigue driving, away from the ticket. Other Security Alert Types: Average Speed Camera, Red Light Camera ,Railway Crossing, High Accident Zone,City Entry Piont, Dangerous Area etc.
- 【Professional Solution】：XGODY Car GPS Navigation supplies regular maps upgrades and any question inquiry. Our company established a professional technician team to solve various problems for our customers. If You Have Any Questions About This Product, Please Contact Us Via Amazon. We will reply to You within 24 Hours.🚙Note: Car GPS Navigation maintenance: after receiving it, please use the car charger to fully charge then use.
7. Rand McNally TND 750 7-inch GPS Truck Navigator, Easy-to-Read Display, Custom Truck Routing and Rand Navigation 2.0
- TND 750 is a sixth-generation TND truck GPS
- Featuring a sleek new design inside and out
8. Garmin dēzl 580 LMT-S 5in GPS Truck Navigator (Renewed)
- 5.0” truck navigator with maps of North America, plus free lifetime map updates and free live traffic
- Customized truck routing for the size and weight of your truck, Plus alerts for upcoming bridge heights, weight limits
- Easy break planning with timely notifications for breaks, Plus up ahead road signs to suggest nearby restaurants, rest areas
- Truck & Trailer services directory; even filter truck stops by brand or amenity such as “flying j” or “showers”
9. Truck GPS Xgody GPS Navigation 9″ Inch Big Screen for Truck Drivers Navigation Bluetooth AV-in Lifetime North America Maps (USA + Canada) 3D & 2D M
- ★【EXCELLENT CUSTOMER SERVICE 】XGODY Truck GPS has specialized in the GPS industry for more than 10 years. We offer 24/7 Customer support/service. We are actually real human to serve you ONE TO ONE.
- ★【9 INCH BIG SCREEN FOR TRUCK】XGODY X5 gps navigation brings 9-inch high-resolution and large screen, brighter with the resolution of 800×480, Clearer screen display, which gives you a better visual experience. You can customize a better route according to your vehicle’s weight, length, height and width, thus avoiding the roads which have width restrictions or height restriction or weight restriction, etc.
- ★【NEW SERIES & UPGRADED UI】XGODY X5 Car GPS comes with special design by Italian designer for 4 months, this new series brings the upgraded UI , which is easy to use and practicable with humanization design.
- ★【FREE LIFETIME MAPS 】XGODY X5 Vehicle GPS Satellite Navigator comes with 2D/3D All America maps, including Argentina, Brazil, Canada, Chile, Colombia, Costa Rica, Mexico, United States. If you wanna update maps or maps of other country, please be free to email us via amazon.
- ★【CUSTOMISABLE TO YOUR NEEDS 】never miss your exit or turn with Advanced Lane Guidance. It shows you exactly which lane to take before you approach an exit, turn or difficult intersection—so you can stay on the right path. Our Truck GPS specialized in truck driving. It take in consideration the height ,width ,length, weight , product you transport(Dangerous goods) It has Low bridge, Road Sign and No truck etc… plus a lots more!
10. GPS Navigation for Truck & RV & Car, 7 Inch GPS Navigation System, GPS for Truck Drivers Commercial, 2021 Maps with Free Lifetime Update, Spoken T
Uses of GPS: What are GPS systems used for?
The Global Positioning System (GPS) which is a satellite system was originally created for the military by the United States Department of Defense. Today, GPS is used for many civilian applications such as telling users where they are and how to get to their destinations.
GPS uses in aviation can be used for a variety of purposes. First off, GPS units are used to provide position information to the pilots as well as ground control stations. In addition, they are also used to monitor and control ground vehicles and aircraft.
The use of GPS for tracking vehicles has been used for years as a surveillance measure. It was first introduced as a way to track stolen cars. The police would put the receiver antennae on top of buildings, trees or other high places and watch which cars passed by and how long they stayed there. Then they would focus their investigation on those people who were guilty by seeing which car had been stolen.
GPS proves to be much more useful than just tracking cars because it can also be used to find your way back after getting lost in unfamiliar territory, locate specific addresses and so on.
This system is used in Outdoor activities like hiking, hunting, fishing, and stuff as it allows us to identify our location, destination and also helps us find the shortest route to get from one place to another. In addition, it’s a very handy device when we are lost or in need of help.
In the military, google maps and other navigational devices may be difficult to use. This is because they may not function in combat zones or when a commander needs to quickly change the location of a group.
The GPS system has been used in a wide variety of contexts by military organizations, such as for guiding drones and for providing navigation guidance.
In the automotive industry, the use of GPS has been very beneficial. One of such benefits is that it can improve vehicle safety because it provides directions and other important information to drivers. It also helps navigation by displaying a map on a car’s screen and providing driving instructions to lead users to their destination.
Location Tracking for Pets
Gps uses in location tracking for pets to find and locate their owners and other family members.
This is a new and innovative way of using the Gps while not just focusing on using it to track vehicles. This is a more secure way of finding your loved ones while you’re away, and if you have a pet, this will be the best way to find them when you need them or if they go missing.
The use of GPS has had a huge impact on the world of surveying. This technology is used to measure the distance traveled with precision and accuracy. This has allowed for more accurate calculations of distances, which was an issue before GPS technology came into play.
Global Positioning Satellites (GPS) have been used for a variety of purposes. Its uses include location-based services, navigation, remote sensing, and surveying.
GPS receivers are useful in telecommunication services for providing accurate timing information to synchronize clocks within a region.
They also help in locating people and objects, estimating the traffic conditions, and improving the productivity of workers in the field.
Public Safety and Relief Work
The use of GPS in public safety and relief work is growing.
GPS enables us to locate natural disasters, predict crime, predict the spread of disease, and predict the place where accidents are most likely to happen. These predictions can be used to enhance public safety and relief work.
Law Enforcement Application
Law enforcement officers are using technology to track their suspects. GPS is used in law enforcement to track down criminals, help search for missing persons, and monitor parolees. GPS can be used for this because it helps locate the exact location of the person being monitored.
There are many ways to save money when it comes to GPS. One of the best ways is by choosing a cheap GPS device.
A GPS device can be an excellent investment for those who travel a lot and want a cheaper alternative to expensive car rentals or hotels.
While a professional gps for professional truck drivers can still give you accurate directions and generally help you navigate your way, it may also provide you with settings, locations, and information that make the difference between life and death.