Your equipment must be non-standard, because 102 inches is the regulation width of ladder truck (8.5’). Maximum legal width for commercial truck is also 8.5’. Unless the commercial vehicle is an oversized load, it will not block the firetruck. Add some bike lanes (with mountable curb) and you get even more space.
Wider lanes width is only needed if you are building high-speed Stroad – and you are in the wrong Sub if you think those are a good idea.
Your equipment must be non-standard, because 102 inches is the regulation width of ladder truck (8.5’). Maximum legal width for commercial truck is also 8.5’. Unless the commercial vehicle is an oversized load, it will not block the firetruck. Add some bike lanes (with mountable curb) and you get even more space.
Wider lanes width is only needed if you are building high-speed Stroad – and you are in the wrong Sub if you think those are a good idea.