Buying guide for最佳导航系统
Yes, it is possible to use your smartphone for navigation, but you're also using it for a half dozen other tasks. And, picking your smartphone up to study a tiny map is just as dangerous as texting and driving. In many cases, a wiser option is using a dedicated navigation system.
最佳的导航系统是最新的，并具有详细信息，例如要使用哪些车道以及附近的感兴趣点。您需要一个足够大的模型，可以清楚地看到，但没有一个会干扰您对道路的看法。使用语音命令的导航系统比开车时将眼睛和手从方向盘上移开更安全。
关键导航系统注意事项
导航系统是一种复杂的设备，购买时需要考虑许多细节。为了使我们的结果尽可能清楚，我们将研究结果组织为这些类别：
Testing navigation systems
我们花了16个小时研究14个导航系统，然后才选择我们的前5个。然后我们购买了我们喜欢的模型并在我们的实验室中进行了测试。
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Display and controls
显示屏尺寸
The most popular sizes for a navigation system’s display are 5", 6", and 7". However, models as small as 3.5” are widely available. Is screen size really a significant factor?
大多数具有平均视力的人发现5英寸屏幕非常舒适，但是如果设备安装在较大的车辆中，例如面包车或RV。仪表板布局和在这些车辆中驾驶位置会发生变化from the driver’s eyes than in a smaller sedan. A 6" or 7" model would be a better choice. The latter are particularly popular with professional truckers.
On the other hand, a big-screen GPS may not be the best choice in a compact or subcompact car. A 7” display in a smaller vehicle might seem to block too much of the view through the windshield! If possible, test drive a navigation system with your car to determine which size display is best for your situation.
图片清晰度
屏幕清晰度在很大程度上取决于显示尺寸，但清晰度也受分辨率的影响。较旧的型号提供480 x 272像素，而许多较新的像素提供了800 x 480像素。像素密度可以产生很大的不同。
一些主人抱怨说，明亮的阳光会降低特定模型上的可见性，或者屏幕太反光。百度必威下载评论还可以表明模型还不够亮。更改屏幕的安装角通常可以解决这些问题。提供夜间模式的型号会自动调整显示对比度，以在黑暗中更好地观看。在选择导航系统之前，请检查大量客户评论中是否经常指出任何显示问题。百度必威下载
“汽车GPS导航系统可以向您显示交通繁忙，快捷方式等，但它无法预测交通信号灯。因此，请始终留意换档。”
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触摸或说话
触摸屏控件一直是卫星导航系统的功能，现在有些型号提供了捏到Zoom功能。但是，屏幕上的控件要求您将视线移开，然后将手从方向盘上移开。
许多现代导航系统可以控制by voice, which promotes safe driving by enabling drivers to keep their eyes on the road and hands on the wheel. Determining if a system offers this capability is part of our research.
导航系统屏幕的清晰度对于消费者阅读重要旅行信息的能力至关重要。我们记下像素的大小和光条件如何影响屏幕的可读性，并考虑它是否具有黑暗后的夜间旅行模式。
We assess the screen size of each system we consider. The most common sizes are 3.5, 5, 6, and 7 inches. We help consumers determine the best size for their vehicle and dashboard design.
Many of the best navigation models offer lifetime mapping updates. Because routes change, this capability is key to providing the most accurate navigation.
In our research of navigation systems, we assess advanced features such as 3D technology and split-screen lane guidance. These features make the navigational feedback more realistic and are readily available on modern systems.
Some systems have a points of interest (POI) function. We take into account whether a model offers this feature, which is typically accessible with a smartphone via Bluetooth connectivity.
We consider how much live information a navigation system provides. Does it warn of various road conditions? Does it monitor traffic patterns? These capabilities appeal to consumers who want the latest navigation technology.
When researching navigation systems, we evaluate the setup process as well as how easy or difficult the touchscreens are to navigate.
系统的价格越高，它提供的功能越多。虽然我们建议消费者避开50美元以下的型号，但可以以各种价值的价格获得有用的功能。
Garminand TomTom are the two most popular manufacturers of navigation systems. We consider top models by these brands, as well as others, in our research.
我们的几种最佳选择通过提供语音控制来镜像智能手机和平板电脑技术。语音命令可以比触摸屏更安全，但是语音控制系统的响应能力和质量非常重要。
Maps and journey planning
熬夜
GPS data is updated constantly. Big cities have more detail than rural towns, but mapping of even the most remote areas is getting better all the time. Also, areas that are thoroughly mapped change frequently, hence the value of lifetime map updates. You might save a few bucks by not having this feature, but for us it's a no-brainer. All our finalists offer it.
However, downloading updates can be frustrating. Many owners find the process painfully slow, and on some models, we agree. Occasionally updating is impossible because the navigation system lacks sufficient memory. Manufacturers are working to correct and prevent these issues with each new model, but it’s still worth checking before selecting a navigation system.
就像现实世界一样？
Map display style varies between models. One useful feature that has become standard is additional lane guidance on a split screen when approaching an off-ramp or interchange. 3D technology is also being more widely used, providing a more realistic view of landmarks and surrounding buildings.
Actual route planning is also now available with many models, a major benefit according to the feedback we've received. Also, the sophistication of route planning preferences is increasing. Older navigation systems obliged you to choose to use freeways or avoid them; now you can mix and match to suit your preference.
At your fingertips
Another popular feature is the ability to simply tap the map to select a destination, rather than typing in an address. It's particularly useful when you want to visit an area but don't have a precise location in mind.
你可知道？
For added safety on the road, it is advised to use voice navigation on your GPS system than having to take your eyes off to look at the map, and figure out your location and directions.
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交通，速度相机和其他信息
Points of interest
POI（兴趣点）在导航系统中并不是什么新鲜事物。POI的重要性因一个所有者而异，但是当您突然注意到自己的气度较低时，此功能可能非常有用。
每个制造商都声称他们的POI功能比竞争更好，但实际上它们之间几乎没有差异。实时流量信息也是如此。这是一个很棒的功能，可以帮助您避免严重的障碍或重大延误，但是关键的区别是该功能的可用性，而不是提供的信息的质量。
This wealth of live information seems tremendously useful, but most of these features are only available by connecting your navigation system to your smartphone. It's not hard to do via Bluetooth, but many owners feel the use of two devices is a bit of overkill.
"While most GPS map data comes from satellites, companies like TomTom and Garmin also use feedback provided by drivers for many live details."
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更好的警告，更安全的驾驶
Manufacturers are constantly adding new types of live information to their navigation systems. You can be alerted to a sharp bend approaching, a school zone, speed camera, even speed bumps.
一些型号提供了天气信息，或者您驾驶的警告时间太长了，应该休息一下。
Roadside assistance is available through some models, and you can even get help finding a parking space.
通信和易用性
We've already mentioned the option of voice control on some navigation systems. Whether finding your destination or locating the nearest coffee house, voice control allows you to keep both hands on the wheel and can increase safety. Voice recognition isn’t perfect, but the technology is improving rapidly.
Driving directions from the navigation system are also becoming more user-friendly. Manufacturers attempt regularly to make the navigation instructions sound more conversational. For example, the system might point out that the next turn will be at a light, or it might suggest stopping at a recognizable building. Older models tend to employ a “next left, next right” style of directions.
完整的解决方案
Some modern GPS models take the蓝牙和智能手机链接进一步。接到电话时，它们充当免提显示屏。您可以看到谁在打电话，并决定是否回答。他们还可以显示短信。
Navigation system prices
我们不建议低于50美元的导航系统。这些模型中的信息质量将缺乏，并且功能集将很小。地图可能很差，更新（如果有）很少。
A top-of-the-range model costs more – around $350 at the upper end – but for that price you get the most important features, including lifetime upgrades. These models are well worth the investment, particularly if you travel frequently to unfamiliar places.
你可知道？
Nickel cadmium batteries suffer from “memory effect.” Their ability to hold a charge decreases over time. Higher-quality GPS units use lithium ion batteries.
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较新总是更好吗？
当涉及到电子产品时，我们总是被最新型号所吸引。每个新版本的承诺都比上一个更大。但是真的是这样吗？我们的研究加上客户反馈，得出了一个简单的答案：这取决于。
一些消费者喜欢完全参与其设备。他们探索所有的来龙去脉，使自己熟悉所有功能。其他人只想打开GP，输入地址并遵循指示。
两家领先的制造商Garmin和Tom Tom迎合了这两组。以及他们提供的功能以及地图数据的强度使这些理想的选择。
“大多数现代导航系统除了12V车内充电器外还可以通过USB充电。当设备关闭时，您的GPS将更快地充电。”
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GarminNüvi和TomTom通过数以万计的用户既公认，受欢迎又信任。对于那些只想到达自己的目标的人来说，这些模型是绝佳的选择。
Garmin Drivesmart和Tomtom Go是下一代，已经进步了，并且一直在变得更好。这些模型有了更多的探索功能，吸引了电子产品和喜欢从小工具中获得最大收益的人。
For the moment, we feel the Nüvi and Via ranges have the edge in terms of price and performance, but it's a close call. Each product in our product list is an excellent navigation system.
