As a general rule, what is the maximum spacing in feet between traffic control devices in a taper?

The maximum spacing between traffic control devices in a taper is determined by the speed of the traffic, which is directly related to the speed limit in miles per hour (MPH). In a taper, which is a substantial area where the roadway narrows or shifts position, traffic control devices such as cones or barrels are used to effectively guide vehicles.

When spacing these devices, the general rule is to space them based on the speed limit to ensure that drivers have sufficient time to react to the change in roadway conditions and can safely navigate through the work zone. At higher speeds, the spacing tends to be wider, while at lower speeds, devices are placed closer together to maintain safe traffic flow and minimize the risk of accidents.

Thus, the correct answer focuses on the speed limit in MPH, as it informs how far apart each traffic control device should be placed within the taper to enhance safety and efficiency in traffic control during work zones.