Method for managing image data in a vehicle lighting system, the lighting system comprising: - at least one lighting module able to project lighting functions on the basis of compressed image data, and - a multiplexed CAN-protocol or CAN-FD-protocol bus for transmitting compressed image data to said at least one lighting module, the method comprising the following steps: - receiving an instruction to trigger a first lighting function from the vehicle lighting system; characterized in that the method comprises the following steps: - receiving an instruction to trigger a second lighting function from the vehicle lighting system, in order to generate the second lighting function at the same time as the first lighting function; - determining, in order to generate said first lighting function and second lighting function at the same time, a compression rate (TxCompReq) required to transmit the image data on said multiplexed bus; - comparing the determined compression rate (TxCompReq) with a predetermined compression rate value; wherein, when the determined compression rate (TxCompReq) is greater than or equal to said predetermined value, the method comprises the following steps: - compressing the image data of the first function and second function; - transmitting the compressed image data to said at least one lighting module in order to generate the first lighting function and second lighting function at the same time; and wherein, when the determined compression rate (TxCompReq) is less than said predetermined value, the method comprises the following steps: - compressing the image data of just one of the first lighting function and second lighting function; - transmitting the compressed image data to said at least one lighting module in order to generate just one of the first lighting function and second lighting function. - at least one lighting module able to project lighting functions on the basis of compressed image data, and - a multiplexed CAN-protocol or CAN-FD-protocol bus for transmitting compressed image data to said at least one lighting module, - receiving an instruction to trigger a first lighting function from the vehicle lighting system; characterized in that the method comprises the following steps: - receiving an instruction to trigger a second lighting function from the vehicle lighting system, in order to generate the second lighting function at the same time as the first lighting function; - determining, in order to generate said first lighting function and second lighting function at the same time, a compression rate (TxCompReq) required to transmit the image data on said multiplexed bus; - comparing the determined compression rate (TxCompReq) with a predetermined compression rate value; - compressing the image data of the first function and second function; - transmitting the compressed image data to said at least one lighting module in order to generate the first lighting function and second lighting function at the same time; - compressing the image data of just one of the first lighting function and second lighting function; - transmitting the compressed image data to said at least one lighting module in order to generate just one of the first lighting function and second lighting function.