Method for transmitting a message in a communication network for communicating between a road user and at least one further road user (101, 102, 104), wherein the road user and the further road user (101, 102, 104) each have an evaluation unit for transmitting messages via the communication network, wherein the method comprises: receiving a first message in the evaluation unit, wherein the first message comprises message segments (S 1, S 2, S 3, S 4, S 5) each with a priority value (p 1, p 2, p 3, p 4, p 5); determining a current utilization of the communication network; filtering message segments (S 4, S 5) to be transmitted from the first message on the basis of the priority values (p 2, p 2, p 3, p 4, p 5) and the current utilization of the communication network; and generating a second message having the message segments (S 4, S 5) to be transmitted, and sending the second message via the communication network; characterized in that the method also comprises: determining a maximum message size (M max) of a message to be transmitted on the basis of the current utilization of the communication network, and determining a priority threshold value (p th) on the basis of the current utilization of the communication network; filtering the message segments (S 4, S 5) to be transmitted from the first message on the basis of the maximum message size (M max) and the priority threshold value (p th); wherein a filter list (L 1) of message segments (S 1, S 2, S 3, S 4, S 5) to be filtered is created; wherein the priority values (p 1, p 2, p 3, p 4, p 5) are each compared with the priority threshold value (Pth); wherein the filter list (L 2) is shortened by removing message segments (S 1, S 3), the priority value (p 1, p 3) of which is below the priority threshold value (Pth); wherein the message segments (S 4, S 5) to be transmitted are selected from the shortened filter list (L' 1) taking into account the maximum message size (M max). receiving a first message in the evaluation unit, wherein the first message comprises message segments (S 1, S 2, S 3, S 4, S 5) each with a priority value (p 1, p 2, p 3, p 4, p 5); determining a current utilization of the communication network; filtering message segments (S 4, S 5) to be transmitted from the first message on the basis of the priority values (p 2, p 2, p 3, p 4, p 5) and the current utilization of the communication network; and generating a second message having the message segments (S 4, S 5) to be transmitted, and sending the second message via the communication network; characterized in that the method also comprises: determining a maximum message size (M max) of a message to be transmitted on the basis of the current utilization of the communication network, and determining a priority threshold value (p th) on the basis of the current utilization of the communication network; filtering the message segments (S 4, S 5) to be transmitted from the first message on the basis of the maximum message size (M max) and the priority threshold value (p th); wherein a filter list (L 1) of message segments (S 1, S 2, S 3, S 4, S 5) to be filtered is created; wherein the priority values (p 1, p 2, p 3, p 4, p 5) are each compared with the priority threshold value (Pth); wherein the filter list (L 2) is shortened by removing message segments (S 1, S 3), the priority value (p 1, p 3) of which is below the priority threshold value (Pth); wherein the message segments (S 4, S 5) to be transmitted are selected from the shortened filter list (L' 1) taking into account the maximum message size (M max). determining a maximum message size (M max) of a message to be transmitted on the basis of the current utilization of the communication network, and determining a priority threshold value (p th) on the basis of the current utilization of the communication network; filtering the message segments (S 4, S 5) to be transmitted from the first message on the basis of the maximum message size (M max) and the priority threshold value (p th); wherein a filter list (L 1) of message segments (S 1, S 2, S 3, S 4, S 5) to be filtered is created; wherein the priority values (p 1, p 2, p 3, p 4, p 5) are each compared with the priority threshold value (Pth); wherein the filter list (L 2) is shortened by removing message segments (S 1, S 3), the priority value (p 1, p 3) of which is below the priority threshold value (Pth); wherein the message segments (S 4, S 5) to be transmitted are selected from the shortened filter list (L' 1) taking into account the maximum message size (M max).