VEHICLE SPEED AND COASTING CONTROL METHOD AND SYSTEM

A method and a system for controlling a cruise control and a transmission in a vehicle over the course of a road section, wherein prior to the road section, the vehicle has applied coasting and utilizes the cruise control. A reference speed vutilized in the cruise control during the coasting is lowered to a lowest permitted speed vdefined for the road section if the lowering is deemed applicable. A comparison of a drive force Frequested from an engine system in the vehicle with a threshold value Ffor the drive force is also carried out. The coasting is then suspended if the requested drive force Fexceeds the threshold value Ffor the drive force.