The traffic sign you referred to, "Guiding board with guiding post, ascent right-1," serves as a directional sign to inform drivers about the road conditions ahead. In particular, this sign indicates that the road will ascend to the right. This is important for drivers to know, as it suggests that they may need to adjust their speed, especially if they are driving in a vehicle that may have difficulty with steep inclines.

Understanding this sign helps drivers prepare for the changing road conditions and ensures safety while navigating through areas with elevation changes. Always be cautious and mindful of the vehicle's capabilities when driving in such conditions. If you have any further questions about this sign or other traffic rules, feel free to ask!