[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-07-27。"],[[["\u003cp\u003eRouting preferences determine how routes are calculated, considering factors like traffic conditions.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTRAFFIC_UNAWARE\u003c/code\u003e provides the fastest routes without considering real-time traffic, suitable when traffic is irrelevant.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTRAFFIC_AWARE\u003c/code\u003e balances speed and accuracy by incorporating live traffic data with some optimizations for reduced latency.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eTRAFFIC_AWARE_OPTIMAL\u003c/code\u003e prioritizes accuracy, calculating routes based on real-time traffic for the most precise ETAs, but may have higher latency.\u003c/p\u003e\n"],["\u003cp\u003eThe default setting is \u003ccode\u003eTRAFFIC_UNAWARE\u003c/code\u003e if no routing preference is specified using \u003ccode\u003eROUTING_PREFERENCE_UNSPECIFIED\u003c/code\u003e.\u003c/p\u003e\n"]]],["The document defines four routing preference values: `ROUTING_PREFERENCE_UNSPECIFIED` (defaulting to `TRAFFIC_UNAWARE`), `TRAFFIC_UNAWARE` (ignores live traffic, offering lowest latency and relying on average conditions), `TRAFFIC_AWARE` (considers live traffic with some latency optimizations), and `TRAFFIC_AWARE_OPTIMAL` (considers live traffic without optimizations, resulting in highest latency). When choosing routes with the drive or two-wheeler travel mode, only average time-independent conditions are considered, with possible inclusions of closed roads.\n"],null,["A set of values that specify factors to take into consideration when calculating the route.\n\n| Enums ||\n|----------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `ROUTING_PREFERENCE_UNSPECIFIED` | No routing preference specified. Default to `TRAFFIC_UNAWARE`. |\n| `TRAFFIC_UNAWARE` | Computes routes without taking live traffic conditions into consideration. Suitable when traffic conditions don't matter or are not applicable. Using this value produces the lowest latency. Note: For [`RouteTravelMode`](/maps/documentation/routes/reference/rest/v2/RouteTravelMode) `DRIVE` and `TWO_WHEELER`, the route and duration chosen are based on road network and average time-independent traffic conditions, not current road conditions. Consequently, routes may include roads that are temporarily closed. Results for a given request may vary over time due to changes in the road network, updated average traffic conditions, and the distributed nature of the service. Results may also vary between nearly-equivalent routes at any time or frequency. |\n| `TRAFFIC_AWARE` | Calculates routes taking live traffic conditions into consideration. In contrast to `TRAFFIC_AWARE_OPTIMAL`, some optimizations are applied to significantly reduce latency. |\n| `TRAFFIC_AWARE_OPTIMAL` | Calculates the routes taking live traffic conditions into consideration, without applying most performance optimizations. Using this value produces the highest latency. |"]]