Final answer:
The signs that indicate the conditions of entry onto an installation should be located a reasonable distance away from the point of entry.
Step-by-step explanation:
The signs that indicate the conditions of entry onto an installation should be located a reasonable distance away from the point of entry. The specific distance may vary depending on factors such as the size of the installation and the visibility of the signs. Generally, the signs should be placed far enough in advance to allow drivers to safely react to the information provided on the signs and make any necessary adjustments to their approach. For example, on a highway, signs indicating the conditions of entry onto a rest area may be placed several hundred yards before the actual exit.