Windshield time — the hours technicians spend behind the wheel instead of on a job site — is the single largest hidden cost in most field-service P&Ls. It doesn't appear on an invoice, doesn't get flagged in QuickBooks, and doesn't show up in end-of-day reports. But it eats 20–35% of a typical tech's day.
Measure it before you fix it
You cannot manage what you don't measure. Start by asking every truck to clock 'travel' as a distinct activity for two weeks. Most teams are shocked: the number is almost always higher than the dispatcher's guess.
Three changes that consistently cut windshield time
1. Cluster jobs by geography, not by customer relationship
Dispatchers instinctively assign the 'good' customer to the 'good' tech. That's usually wrong. Assign by proximity first, and let routing win over relationships. Use a two-tier rule: assign by zone for standard work, override only for jobs that genuinely need a specific technician.
2. Front-load the morning
The first job of the day is the one most sensitive to traffic. Push start times to before rush hour when possible, and put the furthest job first while the tech is fresh and the roads are clear.
3. Give techs a real map, not a list
A route optimized by a computer, shown on a phone map with turn-by-turn built in, will beat a printed job list every day. This is the single highest-ROI feature in a modern FSM tool.
What the reclaimed hours are worth
A five-truck team that reclaims one hour per tech per day, at an $85 fully-loaded billable rate, adds $110,000 of capacity per year. That's before considering the fuel, wear, and overtime savings.
"We didn't hire a sixth tech last spring. We just gave the five we had their afternoons back."
The best windshield-time reduction isn't a big software rollout — it's a two-week measurement pass followed by three small changes. Do that first, then let the platform automate what you've already proven works.