Laying out an acceleration lane adjacent to a merge ramp on one of our projects and I asked my boss, how long he wants the lane to be. He gave me a traffic engineer measurement of 6 seconds at 60mph.
@janallmac That depends on the how far the actual thing is from you. Acceptable answers from shortest to longest are:
-just up the road
-only a few miles away
-less than an hour
-a bit more than an hour
-n-hours away
Time is an okay answer for distance away. Unless they specifically asked how many miles.
The engineer side is a time and a speed to be precise.