Maps JavaScript API ช่วยให้คุณแสดงเครือข่ายขนส่งสาธารณะของเมืองบนแผนที่ได้โดยใช้ออบเจ็กต์ TransitLayer เมื่อเปิดใช้เลเยอร์ขนส่งสาธารณะและแผนที่อยู่ตรงกลางเมืองที่รองรับข้อมูลขนส่งสาธารณะ แผนที่จะแสดงเส้นทางขนส่งสาธารณะหลักเป็นเส้นหนาสี ระบบจะตั้งค่าสีของสายตามข้อมูลจากผู้ให้บริการเดินรถ การเปิดใช้เลเยอร์ขนส่งสาธารณะจะเปลี่ยนรูปแบบของแผนที่ฐานเพื่อเน้นเส้นทางขนส่งสาธารณะได้ดียิ่งขึ้น
หากคุณเป็นหน่วยงานรัฐที่ดูแลระบบขนส่งสาธารณะในเมืองและต้องการให้รวมข้อมูลของคุณ โปรดไปที่เว็บไซต์โปรแกรมพาร์ทเนอร์ขนส่งสาธารณะของ Google เพื่อดูข้อมูลเพิ่มเติม
[[["เข้าใจง่าย","easyToUnderstand","thumb-up"],["แก้ปัญหาของฉันได้","solvedMyProblem","thumb-up"],["อื่นๆ","otherUp","thumb-up"]],[["ไม่มีข้อมูลที่ฉันต้องการ","missingTheInformationINeed","thumb-down"],["ซับซ้อนเกินไป/มีหลายขั้นตอนมากเกินไป","tooComplicatedTooManySteps","thumb-down"],["ล้าสมัย","outOfDate","thumb-down"],["ปัญหาเกี่ยวกับการแปล","translationIssue","thumb-down"],["ตัวอย่าง/ปัญหาเกี่ยวกับโค้ด","samplesCodeIssue","thumb-down"],["อื่นๆ","otherDown","thumb-down"]],["อัปเดตล่าสุด 2025-08-10 UTC"],[[["\u003cp\u003eThe Maps JavaScript API offers Traffic, Transit, and Bicycling layers to enhance the base map with real-time information.\u003c/p\u003e\n"],["\u003cp\u003eThese layers provide data on current traffic conditions, public transit networks, and bicycle routes, respectively.\u003c/p\u003e\n"],["\u003cp\u003eThe layers are implemented using \u003ccode\u003eTrafficLayer\u003c/code\u003e, \u003ccode\u003eTransitLayer\u003c/code\u003e, and \u003ccode\u003eBicyclingLayer\u003c/code\u003e objects and are available in select regions.\u003c/p\u003e\n"],["\u003cp\u003eTransit Layer data is sourced from the Google Transit Partner Program, and public agencies can contribute their city's data.\u003c/p\u003e\n"],["\u003cp\u003eBicycling Layer visually differentiates dedicated bike routes, bike lanes, and recommended paths using varying colors and styles.\u003c/p\u003e\n"]]],["The core content describes how to use the Maps JavaScript API to overlay traffic, transit, and bicycling information on maps. The `TrafficLayer` displays real-time traffic conditions, refreshing frequently. The `TransitLayer` shows a city's public transit network, highlighting major lines. The `BicyclingLayer` adds bike paths and recommended routes. Each layer alters the base map's style. Each layer provides examples in TypeScript and JavaScript, and includes the use of `TrafficLayer`, `TransitLayer`, or `BicyclingLayer` objects with `setMap`.\n"],null,["The Traffic, Transit, and Bicycling layers modify the base map layer to display\ncurrent traffic conditions, local transit networks, or bicycling route information.\nThese layers are available in [select regions](/maps/coverage).\n\nTraffic Layer\n\nThe Maps JavaScript API allows you to add real-time traffic\ninformation (where supported) to your maps using the `TrafficLayer`\nobject. Traffic information is refreshed frequently, but not instantly. Rapid\nconsecutive requests for the same area are unlikely to yield different\nresults. \n\nTypeScript \n\n```typescript\nfunction initMap(): void {\n const map = new google.maps.Map(\n document.getElementById(\"map\") as HTMLElement,\n {\n zoom: 13,\n center: { lat: 34.04924594193164, lng: -118.24104309082031 },\n }\n );\n\n const trafficLayer = new google.maps.TrafficLayer();\n\n trafficLayer.setMap(map);\n}\n\ndeclare global {\n interface Window {\n initMap: () =\u003e void;\n }\n}\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/samples/layer-traffic/index.ts#L8-L27\n```\n| **Note:** Read the [guide](/maps/documentation/javascript/using-typescript) on using TypeScript and Google Maps.\n\nJavaScript \n\n```javascript\nfunction initMap() {\n const map = new google.maps.Map(document.getElementById(\"map\"), {\n zoom: 13,\n center: { lat: 34.04924594193164, lng: -118.24104309082031 },\n });\n const trafficLayer = new google.maps.TrafficLayer();\n\n trafficLayer.setMap(map);\n}\n\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/layer-traffic/docs/index.js#L7-L17\n```\n| **Note:** The JavaScript is compiled from the TypeScript snippet.\n[View example](/maps/documentation/javascript/examples/layer-traffic)\n\nTry Sample \n[JSFiddle.net](https://jsfiddle.net/gh/get/library/pure/googlemaps/js-samples/tree/master/dist/samples/layer-traffic/jsfiddle) [Google Cloud Shell](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglemaps%2Fjs-samples&cloudshell_git_branch=sample-layer-traffic&cloudshell_tutorial=cloud_shell_instructions.md&cloudshell_workspace=.)\n\nTransit Layer\n\nThe Maps JavaScript API allows you to display the public transit network of a city\non your map using the [`TransitLayer`](/maps/documentation/javascript/reference#TrafficLayer)\nobject. When the Transit Layer is enabled, and the map is centered on a city\nthat supports transit information, the map will display major transit lines as\nthick, colored lines. The color of the line is set based upon information from\nthe transit line operator. Enabling the Transit Layer will alter the style of\nthe base map to better emphasize transit routes.\n\nIf you're a public agency that oversees public transportation for your city and\nwould like your data to be included, please visit\nthe [Google Transit Partner\nProgram](https://maps.google.com/help/maps/mapcontent/transit/) site to learn more.\n\nThe following example shows the Transit layer enabled on a map of London, UK: \n\nTypeScript \n\n```typescript\nfunction initMap(): void {\n const map = new google.maps.Map(\n document.getElementById(\"map\") as HTMLElement,\n {\n zoom: 13,\n center: { lat: 51.501904, lng: -0.115871 },\n }\n );\n\n const transitLayer = new google.maps.TransitLayer();\n\n transitLayer.setMap(map);\n}\n\ndeclare global {\n interface Window {\n initMap: () =\u003e void;\n }\n}\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/samples/layer-transit/index.ts#L8-L27\n```\n| **Note:** Read the [guide](/maps/documentation/javascript/using-typescript) on using TypeScript and Google Maps.\n\nJavaScript \n\n```javascript\nfunction initMap() {\n const map = new google.maps.Map(document.getElementById(\"map\"), {\n zoom: 13,\n center: { lat: 51.501904, lng: -0.115871 },\n });\n const transitLayer = new google.maps.TransitLayer();\n\n transitLayer.setMap(map);\n}\n\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/layer-transit/docs/index.js#L7-L17\n```\n| **Note:** The JavaScript is compiled from the TypeScript snippet.\n[View example](/maps/documentation/javascript/examples/layer-transit)\n\nTry Sample \n[JSFiddle.net](https://jsfiddle.net/gh/get/library/pure/googlemaps/js-samples/tree/master/dist/samples/layer-transit/jsfiddle) [Google Cloud Shell](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglemaps%2Fjs-samples&cloudshell_git_branch=sample-layer-transit&cloudshell_tutorial=cloud_shell_instructions.md&cloudshell_workspace=.)\n\nBicycling Layer\n\nThe Maps JavaScript API allows you to add bicycle information to your maps using\nthe `BicyclingLayer` object. The `BicyclingLayer` renders a layer of bike\npaths, suggested bike routes and other overlays specific to bicycling usage on\ntop of the given map. Additionally, the layer alters the style of the base map\nitself to emphasize streets supporting bicycle routes and de-emphasize streets\ninappropriate for bicycles.\n\nThe following example shows the Bicycle layer enabled on a map of\nCambridge, MA: \n\nTypeScript \n\n```typescript\nfunction initMap(): void {\n const map = new google.maps.Map(\n document.getElementById(\"map\") as HTMLElement,\n {\n zoom: 14,\n center: { lat: 42.3726399, lng: -71.1096528 },\n }\n );\n\n const bikeLayer = new google.maps.BicyclingLayer();\n\n bikeLayer.setMap(map);\n}\n\ndeclare global {\n interface Window {\n initMap: () =\u003e void;\n }\n}\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/samples/layer-bicycling/index.ts#L8-L27\n```\n| **Note:** Read the [guide](/maps/documentation/javascript/using-typescript) on using TypeScript and Google Maps.\n\nJavaScript \n\n```javascript\nfunction initMap() {\n const map = new google.maps.Map(document.getElementById(\"map\"), {\n zoom: 14,\n center: { lat: 42.3726399, lng: -71.1096528 },\n });\n const bikeLayer = new google.maps.BicyclingLayer();\n\n bikeLayer.setMap(map);\n}\n\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/layer-bicycling/docs/index.js#L7-L17\n```\n| **Note:** The JavaScript is compiled from the TypeScript snippet.\n[View example](/maps/documentation/javascript/examples/layer-bicycling)\n\nTry Sample \n[JSFiddle.net](https://jsfiddle.net/gh/get/library/pure/googlemaps/js-samples/tree/master/dist/samples/layer-bicycling/jsfiddle) [Google Cloud Shell](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglemaps%2Fjs-samples&cloudshell_git_branch=sample-layer-bicycling&cloudshell_tutorial=cloud_shell_instructions.md&cloudshell_workspace=.)\n\nDark green routes indicated dedicated bicycle routes. Light green routes\nindicate streets with dedicated \"bike lanes.\" Dashed routes indicate streets or\npaths otherwise recommended for bicycle usage."]]
