遇见数据集

Road Closures Detailed

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GEMA/HS SOC Open Data Hub2026-10-22 收录
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<div style='text-align:Left;'><div><div><p style='margin:0 0 0 0;'><span>The map layers in this service provide color-coded maps of the traffic conditions you can expect for the present time (the default). The map shows present traffic as a blend of live and typical information. Live speeds are used wherever available and are established from real-time sensor readings. Typical speeds come from a record of average speeds, which are collected over several weeks within the last year or so. Layers also show current incident locations where available. </span></p><p style='margin:0 0 0 0;'><span>By changing the map time, the service can also provide past and future conditions. Live readings from sensors are saved for 12 hours, so setting the map time back within 12 hours allows you to see a actual recorded traffic speeds, supplemented with typical averages by default. You can choose to turn off the average speeds and see only the recorded live traffic speeds for any time within the 12-hour window. Predictive traffic conditions are shown for any time in the future.</span></p><p style='margin:0 0 0 0;'><span>The color-coded traffic map layer can be used to represent relative traffic speeds; this is a common type of a map for online services and is used to provide context for routing, navigation, and field operations. A color-coded traffic map can be requested for the current time and any time in the future. A map for a future request might be used for planning purposes.</span></p><p style='margin:0 0 0 0;'><span>The map also includes dynamic traffic incidents showing the location of accidents, construction, closures, and other issues that could potentially impact the flow of traffic. Traffic incidents are commonly used to provide context for routing, navigation and field operations. Incidents are not features; they cannot be exported and stored for later use or additional analysis.</span></p><p style='margin:0 0 0 0;'><span style='font-weight:bold;'>Data source</span></p><p style='margin:0 0 0 0;'><span>Esri’s typical speed records and live and predictive traffic feeds come directly from HERE (</span><a href='http://www.HERE.com'><span><span>www.HERE.com</span></span></a><span><span>). HERE collects billions of GPS and cell phone probe records per month and, where available, uses sensor and toll-tag data to augment the probe data collected. An advanced algorithm compiles the data and computes accurate speeds. </span></span><span>The real-time and predictive traffic data is updated every five minutes through traffic feeds.</span></p><p style='margin:0 0 0 0;'><span style='font-weight:bold;'>Data coverage</span></p><p style='margin:0 0 0 0;'><span>The service works globally and can be used to visualize traffic speeds and incidents in many countries. Check the </span><a href='http://www.arcgis.com/home/webmap/viewer.html?webmap=b7a893e8e1e04311bd925ea25cb8d7c7&amp;extent=-142.207,-43.4529,152.0508,70.729'><span><span>service coverage web map</span></span></a><span /><span> to determine availability in your area of interest. Look at the coverage map to learn whether a country currently supports traffic. The support for traffic incidents can be determined by identifying a country. For detailed information on this service, visit the </span><a href='http://links.esri.com/arcgis-online-network-analysis-rest-api'><span><span>directions and routing documentation</span></span></a><span /><span><span> and the </span></span><a href='http://links.esri.com/arcgis-online-traffic-arcmap'><span><span>ArcGIS Help</span></span></a><span>.</span></p><p style='margin:0 0 0 0;'><span style='font-weight:bold;'>Symbology</span></p><p style='margin:0 0 0 0;'><span>Traffic speeds are displayed as a percentage of free-flow speeds, which is frequently the speed limit or how fast cars tend to travel when unencumbered by other vehicles. The streets are color coded as follows:</span></p><ul><li><p><span>Green (fast): 85 - 100% of free flow speeds</span></p></li><li><p><span>Yellow (moderate): 65 - 85%</span></p></li><li><p><span>Orange (slow); 45 - 65%</span></p></li><li><p><span>Red (stop and go): 0 - 45%</span></p></li></ul><p><span>To view live traffic only—that is, excluding typical traffic conditions—enable the Live Traffic layer and disable the Traffic layer. (You can find these layers under World/Traffic &gt; [region] &gt; [region] Traffic). To view more comprehensive traffic information that includes live and typical conditions, disable the Live Traffic layer and enable the Traffic layer.</span></p><p><span style='font-weight:bold;'>ArcGIS Online organization subscription</span></p><p style='margin:0 0 0 0;'><span style='font-weight:bold;'>Important Note:</span><span><span>The World Traffic map service is available for users with an ArcGIS Online organizational subscription. To access this map service, you'll need to sign in with an account that is a member of an organizational subscription. If you don't have an organizational subscription, you can create a new account and then sign up for a </span></span><a href='https://www.arcgis.com/about/trial.html'><span><span>30-day trial of ArcGIS Online</span></span></a><span>.</span></p></div></div></div>

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