Service Area Settings

[TierneyRosenstock]

I need to do a service area analysis for drive time, but my data does not have a time unit in the attribute field. It does have length and speed limit, but I am unsure how to set up the travel mode for the network to conduct the analysis. Any input would be much appreciated. 

[DavidPike]

Do you have a Network Dataset built or can you obtain one for your area?  

otherwise:

Cost attributes—ArcGIS Pro | Documentation

an example cost for car_drive_time could be:

time (hours) = length (km) / speed (km/h)

for a segment/edge 60km long and a speed limit of 120kph:

time = 60/120 = 0.5 hours

for truck_drive_time, the speed limit might be 60kph, so time = 1hr

[TierneyRosenstock]

I do have a network built for my area using our county road layer, but I don't know how to set up the travel modes and associated cost settings in the network dataset properties. I previously did a service area by distance for another analysis and it would not perform a calculation by miles. I had to use feet. I am working in mph. Here's the settings I have tried, but when I go to run the service area it still has ft under Mode in the travel settings group;