Entering, Exiting, and Merging on the Highway As much as is possible and practical, get your acceleration done before entering the highway. This allows the least amount of disruption to other traffic. Accelerate rapidly to the speed of other traffic. Always signal your intentions. Know how long it will take your vehicle to accelerate to the speed limit and only enter the traffic flow with gaps at least large enough to accommodate you.
Acceleration time varies tremendously from vehicle to vehicle.
Decelerate in a deceleration lane whenever possible, not on highway. Before you begin to brake, ensure that your vehicle is in a straight line so that all of your braking will be done in a straight line. By comparison, when you are travelling on the highway the speed differential between your vehicle and an entering vehicle is large. Therefore, it will be in your way for a longer period of time. If you are moving quickly, you must slow well in advance and be prepared to drive around the vehicle obstructing your path.