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When navigation is enabled and the travel mode is set to driving, the Navigation
SDK for iOS displays a speed limit control in the lower left corner of the map
that shows the current speed limit. If a driver exceeds the speed limit, the
control expands to display a speedometer next to the speed limit display and
triggers alerts when the speed reaches a certain threshold.
By default, the Navigation SDK triggers a minor speed alert when the driver
exceeds the speed limit by 5 mph (or 10 kph), and changes the color of the
speedometer text to red. It triggers a major speed alert when the driver exceeds
the speed limit by 10 mph (or 20 kph), and changes the speedometer background
color to red.
You can customize both the threshold for triggering the alerts and the text and
background colors the speedometer displays. You can also use the Navigation SDK
to make the driver's speed information available. For example, you could make
speed information available to rideshare operators to help them encourage their
drivers to adhere to the speed limit and improve safety.
Customizing thresholds for speed alerts
You can customize the speed alert threshold for both minor and major speed
alerts as a percentage over the speed limit of the current speed. You can also
specify how long the threshold is exceeded before the map displays the alert.
The following code example sets the threshold for a minor speed alert to five
percent over the speed limit, and the threshold for a major speed alert to 10
percent over the speed limit. It specifies that the map displays an alert after
an alert threshold has been exceeded for five seconds.
Swift
letminorSpeedAlertThresholdPercentage:CGFloat=0.05letmajorSpeedAlertThresholdPercentage:CGFloat=0.1letseverityUpgradeDurationSeconds:TimeInterval=5// Configure SpeedAlertOptions let mutableSpeedAlertOptions:GMSNavigationMutableSpeedAlertOptions=GMSNavigationMutableSpeedAlertOptions()mutableSpeedAlertOptions.setSpeedAlertThresholdPercentage(minorSpeedAlertThresholdPercentage,for:.minor)mutableSpeedAlertOptions.setSpeedAlertThresholdPercentage(majorSpeedAlertThresholdPercentage,for:.major)mutableSpeedAlertOptions.severityUpgradeDurationSeconds=severityUpgradeDurationSeconds// Set SpeedAlertOptions to Navigator. mapView.navigator?.speedAlertOptions =mutableSpeedAlertOptions;mapView.navigator?.add(self);// Only needed iflisteningtothedelegateevents.
Objective-C
staticconstCGFloatminorSpeedAlertThresholdPercentage=0.05;staticconstCGFloatmajorSpeedAlertThresholdPercentage=0.1;staticconstNSTimeIntervalseverityUpgradeDurationSeconds=5;// Configure SpeedAlertOptions GMSNavigationMutableSpeedAlertOptions*mutableSpeedAlertOptions=[[GMSNavigationMutableSpeedAlertOptionsalloc]init];[mutableSpeedAlertOptionssetSpeedAlertThresholdPercentage:minorSpeedAlertThresholdPercentageforSpeedAlertSeverity:GMSNavigationSpeedAlertSeverityMinor];[mutableSpeedAlertOptionssetSpeedAlertThresholdPercentage:majorSpeedAlertThresholdPercentageforSpeedAlertSeverity:GMSNavigationSpeedAlertSeverityMajor];[mutableSpeedAlertOptionssetSeverityUpgradeDurationSeconds:severityUpgradeDurationSeconds];// Set SpeedAlertOptions to Navigator. mapView.navigator.speedAlertOptions =mutableSpeedAlertOptions;[mapView.navigatoraddListener:self];// Only needediflisteningtothedelegateevents.
Customizing how the speedometer displays speed alerts
You can customize the colors of the speedometer display for each alert level.
The following table shows the default colors for speed alerts in the
GMSNavigationSpeedometerUIOptions class:
Element
Color
MinorSpeedAlertBackgroundColorDayMode
0xffffff(white)
MinorSpeedAlertBackgroundColorNightMode
0x000000
MinorSpeedAlertTextColorDayMode
0xd93025
MinorSpeedAlertTextColorNightMode
0xd93025
MajorSpeedAlertBackgroundColorDayMode
0xd93025
MajorSpeedAlertBackgroundColorNightMode
0xd93025
MajorSpeedAlertTextColorDayMode
0xffffff(white)
MajorSpeedAlertTextColorNightMode
0xffffff(white)
You can specify the text and background color of the speedometer for both minor
and major speed alerts:
If your application requires sharing information about driver speed, you can
also use the Navigation SDK to make the driver's speed information available.
This can be useful for rideshare applications in which an operator may want to
monitor excessive speeding by drivers to improve safety.
For example, the following example shares speed information when the speed is a
specified percentage over the speed limit:
Swift
// Listener method for sharing speed information when the speed exceeds thespeedlimitbyaspecifiedpercentage.#pragmamarkGMSNavigatorListenerfuncnavigator(_navigator:GMSNavigator,didUpdateSpeedingPercentagepercentageAboveLimit:Float){...}
Objective-C
// Listener method listening to speeding feed. #pragma markGMSNavigatorListener-(void)navigator:(GMSNavigator*)navigatordidUpdateSpeedingPercentage:(float)percentageAboveLimit{...}
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eWhen navigation is in driving mode, the Navigation SDK displays the current speed limit and driver's speed, providing visual and configurable speed alerts.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can customize the thresholds for minor and major speed alerts, including the percentage over the speed limit and duration before triggering.\u003c/p\u003e\n"],["\u003cp\u003eThe speedometer's text and background colors can be customized for day and night modes, allowing for clear visual distinction of speed alert levels.\u003c/p\u003e\n"],["\u003cp\u003eThe Navigation SDK enables access to the driver's speed information, which can be used for purposes like monitoring driver behavior in rideshare applications.\u003c/p\u003e\n"]]],["The Navigation SDK for iOS displays a speed limit and speedometer when driving. Speed alerts are triggered when the driver exceeds the limit. Minor alerts occur at 5 mph (or 10 kph) over, turning the text red. Major alerts occur at 10 mph (or 20 kph) over, turning the background red. Alert thresholds and colors are customizable, including percentages over the limit and time before the alert. The SDK also provides driver speed data for monitoring purposes, such as in rideshare apps.\n"],null,["# Configure speedometer alerts\n\nWhen navigation is enabled and the travel mode is set to driving, the Navigation\nSDK for iOS displays a speed limit control in the lower left corner of the map\nthat shows the current speed limit. If a driver exceeds the speed limit, the\ncontrol expands to display a speedometer next to the speed limit display and\ntriggers alerts when the speed reaches a certain threshold.\n\nBy default, the Navigation SDK triggers a minor speed alert when the driver\nexceeds the speed limit by 5 mph (or 10 kph), and changes the color of the\nspeedometer text to red. It triggers a major speed alert when the driver exceeds\nthe speed limit by 10 mph (or 20 kph), and changes the speedometer background\ncolor to red. \n\nYou can customize both the threshold for triggering the alerts and the text and\nbackground colors the speedometer displays. You can also use the Navigation SDK\nto make the driver's speed information available. For example, you could make\nspeed information available to rideshare operators to help them encourage their\ndrivers to adhere to the speed limit and improve safety.\n\nCustomizing thresholds for speed alerts\n---------------------------------------\n\nYou can customize the speed alert threshold for both minor and major speed\nalerts as a percentage over the speed limit of the current speed. You can also\nspecify how long the threshold is exceeded before the map displays the alert.\n\nThe following code example sets the threshold for a minor speed alert to five\npercent over the speed limit, and the threshold for a major speed alert to 10\npercent over the speed limit. It specifies that the map displays an alert after\nan alert threshold has been exceeded for five seconds.\n\n\u003cbr /\u003e\n\n### Swift\n\n\u003cbr /\u003e\n\n let minorSpeedAlertThresholdPercentage: CGFloat = 0.05 let\n majorSpeedAlertThresholdPercentage: CGFloat = 0.1 let\n severityUpgradeDurationSeconds: TimeInterval = 5\n\n // Configure SpeedAlertOptions let mutableSpeedAlertOptions:\n GMSNavigationMutableSpeedAlertOptions = GMSNavigationMutableSpeedAlertOptions()\n mutableSpeedAlertOptions.setSpeedAlertThresholdPercentage(minorSpeedAlertThresholdPercentage,\n for: .minor)\n mutableSpeedAlertOptions.setSpeedAlertThresholdPercentage(majorSpeedAlertThresholdPercentage,\n for: .major) mutableSpeedAlertOptions.severityUpgradeDurationSeconds =\n severityUpgradeDurationSeconds\n\n // Set SpeedAlertOptions to Navigator. mapView.navigator?.speedAlertOptions =\n mutableSpeedAlertOptions; mapView.navigator?.add(self); // Only needed if\n listening to the delegate events.\n\n\u003cbr /\u003e\n\n### Objective-C\n\n\u003cbr /\u003e\n\n static const CGFloat minorSpeedAlertThresholdPercentage = 0.05; static const\n CGFloat majorSpeedAlertThresholdPercentage = 0.1; static const NSTimeInterval\n severityUpgradeDurationSeconds = 5;\n\n // Configure SpeedAlertOptions GMSNavigationMutableSpeedAlertOptions\n *mutableSpeedAlertOptions = [[GMSNavigationMutableSpeedAlertOptions alloc]\n init]; [mutableSpeedAlertOptions setSpeedAlertThresholdPercentage:\n minorSpeedAlertThresholdPercentage\n forSpeedAlertSeverity:GMSNavigationSpeedAlertSeverityMinor];\n [mutableSpeedAlertOptions\n setSpeedAlertThresholdPercentage:majorSpeedAlertThresholdPercentage\n forSpeedAlertSeverity:GMSNavigationSpeedAlertSeverityMajor];\n [mutableSpeedAlertOptions\n setSeverityUpgradeDurationSeconds:severityUpgradeDurationSeconds];\n\n // Set SpeedAlertOptions to Navigator. mapView.navigator.speedAlertOptions =\n mutableSpeedAlertOptions; [mapView.navigator addListener:self]; // Only needed\n if listening to the delegate events.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nCustomizing how the speedometer displays speed alerts\n-----------------------------------------------------\n\nYou can customize the colors of the speedometer display for each alert level.\n\nThe following table shows the default colors for speed alerts in the\n`GMSNavigationSpeedometerUIOptions` class:\n\n| Element | Color |\n|-----------------------------------------|-----------------|\n| MinorSpeedAlertBackgroundColorDayMode | 0xffffff(white) |\n| MinorSpeedAlertBackgroundColorNightMode | 0x000000 |\n| MinorSpeedAlertTextColorDayMode | 0xd93025 |\n| MinorSpeedAlertTextColorNightMode | 0xd93025 |\n| MajorSpeedAlertBackgroundColorDayMode | 0xd93025 |\n| MajorSpeedAlertBackgroundColorNightMode | 0xd93025 |\n| MajorSpeedAlertTextColorDayMode | 0xffffff(white) |\n| MajorSpeedAlertTextColorNightMode | 0xffffff(white) |\n\nYou can specify the text and background color of the speedometer for both minor\nand major speed alerts:\n\n\u003cbr /\u003e\n\n### Swift\n\n\u003cbr /\u003e\n\n let mutableSpeedometerUIOptions: GMSNavigationMutableSpeedometerUIOptions =\n GMSNavigationMutableSpeedometerUIOptions()\n mutableSpeedometerUIOptions.setTextColor(minorSpeedAlertTextColor, for: .minor,\n lightingMode: .normal)\n mutableSpeedometerUIOptions.setTextColor(majorSpeedAlertTextColor, for: .major,\n lightingMode: .normal)\n mutableSpeedometerUIOptions.setBackgroundColor(minorSpeedAlertNightModeBackgroundColor,\n for: .minor, lightingMode: .lowLight)\n mutableSpeedometerUIOptions.setBackgroundColor(majorSpeedAlertDayModeBackgroundColor,\n for: .major, lightingMode: .normal)\n\n mapView.settings.speedometerUIOptions = mutableSpeedometerUIOptions\n\n\u003cbr /\u003e\n\n### Objective-C\n\n\u003cbr /\u003e\n\n GMSNavigationMutableSpeedometerUIOptions *mutableSpeedometerUIOptions =\n [[GMSNavigationMutableSpeedometerUIOptions alloc] init];\n [mutableSpeedometerUIOptions setTextColor: minorSpeedAlertTextColor\n forSpeedAlertSeverity: GMSNavigationSpeedAlertSeverityMinor lightingMode:\n GMSNavigationLightingModeNormal]; [mutableSpeedometerUIOptions setTextColor:\n majorSpeedAlertTextColor forSpeedAlertSeverity:\n GMSNavigationSpeedAlertSeverityMajor lightingMode:\n GMSNavigationLightingModeNormal]; [mutableSpeedometerUIOptions\n setBackgroundColor: minorSpeedAlertNightModeBackgroundColor\n forSpeedAlertSeverity: GMSNavigationSpeedAlertSeverityMinor lightingMode:\n GMSNavigationLightingModeLowLight]; [mutableSpeedometerUIOptions\n setBackgroundColor: majorSpeedAlertDayModeBackgroundColor forSpeedAlertSeverity:\n GMSNavigationSpeedAlertSeverityMajor\n lightingMode:GMSNavigationLightingModeNormal];\n\n mapView.settings.speedometerUIOptions = mutableSpeedometerUIOptions;\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nReceiving speed information from drivers\n----------------------------------------\n\nIf your application requires sharing information about driver speed, you can\nalso use the Navigation SDK to make the driver's speed information available.\nThis can be useful for rideshare applications in which an operator may want to\nmonitor excessive speeding by drivers to improve safety.\n\nFor example, the following example shares speed information when the speed is a\nspecified percentage over the speed limit:\n\n\u003cbr /\u003e\n\n### Swift\n\n\u003cbr /\u003e\n\n // Listener method for sharing speed information when the speed exceeds the\n speed limit by a specified percentage. #pragma mark GMSNavigatorListener func\n navigator(_ navigator : GMSNavigator, didUpdateSpeedingPercentage\n percentageAboveLimit : Float) { ... }\n\n\u003cbr /\u003e\n\n### Objective-C\n\n\u003cbr /\u003e\n\n // Listener method listening to speeding feed. #pragma mark\n GMSNavigatorListener - (void)navigator:(GMSNavigator *)navigator\n didUpdateSpeedingPercentage:(float)percentageAboveLimit { ... }\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e"]]
