A system comprising: at least one processor; and at least one storage medium containing program instructions that, when executed by the processor, cause the at least one processor to carry out a method comprising: in response to obtaining information regarding a potential collision between a vehicle and an object, wherein the obtaining comprises receiving information from a telematics monitor of the vehicle: obtaining, for a time period extending before and after a time of the potential collision, data describing the vehicle during the time period; determining, based at least in part on the data describing the vehicle during the time period, a likelihood that the potential collision is a non-collision event, by determining, based at least in part on sensor data from the telematics monitor, whether the telematics monitor is operating improperly; and in response to determining that the telematics monitor of the vehicle is operating improperly, determining that the potential collision is not a collision; and in response to determining that the likelihood indicates that the potential collision is not a non-collision event: triggering one or more actions responding to the potential collision, wherein the one or more actions are selected from the group comprising notifying an operator of a fleet of vehicles of which the vehicle is a member, notifying roadside assistance, notifying emergency services, attempting to contact a driver of the vehicle. at least one processor; and at least one storage medium containing program instructions that, when executed by the processor, cause the at least one processor to carry out a method comprising: in response to obtaining information regarding a potential collision between a vehicle and an object, wherein the obtaining comprises receiving information from a telematics monitor of the vehicle: obtaining, for a time period extending before and after a time of the potential collision, data describing the vehicle during the time period; determining, based at least in part on the data describing the vehicle during the time period, a likelihood that the potential collision is a non-collision event, by determining, based at least in part on sensor data from the telematics monitor, whether the telematics monitor is operating improperly; and in response to determining that the telematics monitor of the vehicle is operating improperly, determining that the potential collision is not a collision; and in response to determining that the likelihood indicates that the potential collision is not a non-collision event: triggering one or more actions responding to the potential collision, wherein the one or more actions are selected from the group comprising notifying an operator of a fleet of vehicles of which the vehicle is a member, notifying roadside assistance, notifying emergency services, attempting to contact a driver of the vehicle. obtaining, for a time period extending before and after a time of the potential collision, data describing the vehicle during the time period; determining, based at least in part on the data describing the vehicle during the time period, a likelihood that the potential collision is a non-collision event, by determining, based at least in part on sensor data from the telematics monitor, whether the telematics monitor is operating improperly; and in response to determining that the telematics monitor of the vehicle is operating improperly, determining that the potential collision is not a collision; and determining, based at least in part on sensor data from the telematics monitor, whether the telematics monitor is operating improperly; and in response to determining that the telematics monitor of the vehicle is operating improperly, determining that the potential collision is not a collision; and in response to determining that the likelihood indicates that the potential collision is not a non-collision event: triggering one or more actions responding to the potential collision, wherein the one or more actions are selected from the group comprising notifying an operator of a fleet of vehicles of which the vehicle is a member, notifying roadside assistance, notifying emergency services, attempting to contact a driver of the vehicle.