How the passenger-carrier 10/15-hour rules work
If you drive a bus, a motorcoach, or a charter, your hours-of-service clocks are not the same as a freight driver's. Passenger-carrying drivers run on 49 CFR 395.5, a separate rule from the 49 CFR 395.3 limits that cover property-carrying trucks. The two look similar at a glance and differ in ways that matter every shift. This calculator encodes the passenger numbers so you can sketch a day and see exactly where your clocks stand.
The 10-hour driving limit
Under 49 CFR 395.5(a)(1), you may not drive more than 10 hours following 8 consecutive hours off duty. That is one hour less driving than a property driver's 11-hour limit. When your logged driving time reaches 10 hours since your last reset, you are done driving until you take another qualifying rest. The calculator tracks driving separately from other on-duty time and flags the moment you would cross the 10th hour.
The 15-hour on-duty limit is a total, not a window
This is the difference that catches drivers who cross over from freight. Under 49 CFR 395.5(a)(2), you may not drive after having been on duty 15 hours following 8 consecutive hours off duty. The key word is "on duty." Unlike the property 14-hour rule, which is a continuous window that keeps running whether you are working or not, the passenger 15-hour limit counts only on-duty time. Driving and on-duty-not-driving time add to it; off-duty time and sleeper-berth time do not. A two-hour meal break in the middle of your day does not burn your 15 hours the way it would burn a property driver's 14-hour window. The calculator shows this plainly: add an off-duty block and watch the 15-hour meter hold steady while the clock time advances.
No 30-minute break
Passenger carriers have no 30-minute break requirement. The break in 49 CFR 395.3(a)(3)(ii) applies to property-carrying drivers only, so this calculator tracks no break clock. You are still bound by the 10-hour driving limit and the 15-hour on-duty limit, but you are not required to stop for a half-hour after eight hours of driving.
The reset is 8 hours, not 10
To restart your driving and on-duty clocks, you take 8 consecutive hours off duty or in the sleeper berth (49 CFR 395.5(a)). That is two hours shorter than the property 10-hour reset. When you add a rest block of 8 hours or more, the calculator marks the reset on the timeline and returns both clocks to a full 10 and 15.
A plan, not a logbook
As with every tool here, this is a planning aid, not a compliance record. It does not know your real logs, your carrier's settings, or any exception that might apply to you, and it assumes the hours you type are accurate. Your Electronic Logging Device is the authoritative record of your duty status. Use this to plan your shift, then confirm every number against your ELD before you drive.