What camera data is recorded with an event?

There are 4 combinations to choose from: Snapshot and video (records a snapshot and a video), Snapshot (records a snapshot only), Video (records a video only), or None (does not record a snapshot or a video).

What are chimes and voice coaching?

A chime is a sound produced by the camera when it triggers an event. A trigger may also include voice coaching, which provides verbal instructions or feedback when an event is triggered.

What is a cooldown timer?

Cooldown is the minimum interval between 2 identical events. It can be adjusted in seconds or disabled.

Geotab GO Focus Plus Camera Rules, Thresholds, and Event Buffers Explained

GO Focus Plus is Geotab's native AI dash cam, equipped with a suite of configurable safety rules covering both ADAS (Advanced Driver Assistance Systems) and DMS (Driver Monitoring Systems) events.

By Geotab Team

May 20, 2026

Key Insights

Rules define when events are recorded: A camera rule sets the conditions under which GO Focus Plus generates an event — covering risks like tailgating, lane straddling, phone usage, and distracted driving.
Thresholds are fully configurable: Every rule has adjustable sensitivity settings, allowing fleets to calibrate detection to their vehicle type — for example, applying shorter following distances for light-duty vehicles and longer ones for heavy-duty trucks.
Pre- and post-buffers control clip length: The pre-buffer captures footage before an event is triggered; the post-buffer captures footage after. Together they define the total length of the recorded clip.

1) What are the GO Focus Plus camera rules?

A camera rule defines the conditions in which an event should be generated. GO Focus Plus supports a wide range of rules related to ADAS and DMS.

Rule thresholds are the values that control the sensitivity of the rule and can be adjusted to meet specific customer requirements. For example, consider the rule threshold for detecting tailgating. This threshold could be set to determine the following distance and time to collision between vehicles that constitutes tailgating.

For a fleet of light-duty trucks, a shorter following distance might be acceptable, thus requiring a higher threshold for tailgating detection. Conversely, for a fleet of heavy-duty trucks, a longer following distance is typically needed for safe operation, so a lower threshold would be applied to detect tailgating sooner. This customisation ensures that the rule thresholds are tailored to the operational characteristics of different types of vehicles.

2) What are pre/post event buffers?

The pre-buffer is the time (in seconds) before a rule generates an event, which defines the event recording's start time. The post-buffer is the time (in seconds) after the rule generates an event, which defines the event recording's end time. Both parameters control the total length of the event recording.

3) GO Focus Plus rules and thresholds

Geotab supports a wide range of ADAS and DMS rules that can be deployed to your GO Focus Plus cameras, with the ability to modify thresholds. Below is a list of all rules that GO Focus Plus supports along with their default thresholds. All values are in metric units (km/h).

ADAS

Camera Rules	Description	Configurable Parameters	Default (Metric)	Default (Imperial)	Audible Alert
Collision	A vehicle collides with another vehicle or object, resulting in impact and potential damage.	None	N/A	N/A	Collision.
Defensive Driving	Reducing speed to maintain a safe following distance when another vehicle merges ahead at an unsafe following distance.	Speed Time to Collision	30 to 90km/h : 1s 90 to 120km/h : 0.75 s ≥ 120 km/h : 0.5 s	18 to 56 mph : 1 s 56 to 75 mph : 0.75 s ≥ 75 mph : 0.5 s	Safe Driving.
Lane Straddling	Driving a vehicle over 2 lanes, which can disrupt traffic flow and lead to collisions.	Duration	5 s	5 s	Keep inside the lane.
Near Collision	A vehicle comes dangerously close to a collision, but avoids it through sudden braking or maneuvers.	None	N/A	N/A	Near Collision.
Rolling Stop	Failing to come to a complete stop at a stop sign or red light, instead rolling through the intersection.	Speed	3.6 km/h	2.2 mph	Rolling Stop.
Solid Lane Violation	The vehicle crosses a solid lane	Speed Duration	40 km/h 3 s	25 mph 3 s	Solid Lane Violation.
Tailgating	Following another vehicle too closely, reducing stopping distance and increasing the risk of collision.	Speed Time to Collision	30 to 60 km/h : 1 s 60 to 90 km/h : 1.25 s ≥ 90 km/h : 1.5 s	18 to 37 mph : 1 s 37 to 56 mph : 1.25 s ≥ 56 mph : 1.5 s	Tailgating.

DMS

Camera Rules	Description	Configurable Parameters	Default (Metric)	Default (Imperial)	Audible Alert
Distraction	A driver’s attention is diverted, increasing the risk of a collision.	Duration	6 s	6 s	Eyes on the road.
Drinking	A driver is detected consuming a beverage, potentially impairing their control.	Duration Vehicle Speed	5 s 20 km/h	5 s 12.5 mph	Hands on the wheel.
No Seatbelt	A driver or passenger is not wearing a seatbelt, violating safety regulations.	Speed	20 km/h	12.5 mph	Fasten your seatbelt.
Phone Usage	A driver is detected using a phone, posing a safety risk.	Duration	5 s	5 s	Put your phone down.
Smoking	A driver is detected smoking while driving, which can lead to distractions.	None	N/A	N/A	Smoking.

GO9 Vehicle Tracking Device

Camera Rules	Description	Configurable Parameters	Default (Metric)	Default (Imperial)	Audible Alert
Harsh Acceleration	A rapid increase in vehicle speed, indicating aggressive driving.	G force	0.4 G	0.4 G	Harsh acceleration.
Harsh Braking	A sudden increase in braking force, indicating an emergency stop or aggressive driving.	G force	0.6 G	0.6 G	Harsh Braking.
Harsh Cornering	A fast, sharp turn, indicating cornering at an unsafe speed.	G force	0.5 G	0.5 G	Harsh Cornering.