What a driving hours log is and who needs one
A driving hours log is a record of when you drive, how long you drive, and sometimes where you drive. You write down the date, start time, end time, and miles or kilometres covered. The purpose is to track your total driving time so you and others can see patterns — fatigue, compliance with regulations, or proof of experience for insurance or licensing purposes.
You need a log if you're a commercial driver subject to Hours of Service (HOS) rules, a new driver building experience for insurance discounts, someone managing a fleet, or a driver working toward a professional licence. Even if you're not required to keep one, logging your hours creates a record that can help you spot when you're driving tired and can lower your insurance premiums if your insurer offers discounts for tracked, safer driving.
Key Takeaways
- A driving hours log records the date, start time, end time, and distance of each trip to track total driving time and patterns.
- Commercial drivers in most jurisdictions must keep logs to comply with Hours of Service regulations that limit consecutive driving time.
- You can log hours on paper, in a spreadsheet, or using a telematics app — the format depends on whether your employer or regulator has specific requirements.
- Reviewing your log regularly helps you spot fatigue patterns and can lower your insurance cost if your insurer offers discounts for documented safe driving.
Paper logs versus digital logs
A paper log is a notebook or printed form where you write each trip by hand. You fill in the date, start time, end time, and distance. At the end of each day or week, you add up the hours. Paper logs are straightforward, require no technology, and work anywhere — but they're straightforward to lose, hard to search, and take time to total up manually.
A digital log can be a spreadsheet (Google Sheets, Excel) or a dedicated app. Spreadsheets let you build formulas that calculate hours automatically and sort by date or location. Apps — such as Samsara, Verizon Connect, or Geotab — often include GPS tracking, automatic start-stop detection, and alerts if you're approaching your legal driving limit. Digital logs are searchable and harder to misplace, but they require a device and internet or data connection.
If your employer or a regulatory body requires logs, they usually specify the format. Commercial drivers in North America often must use electronic logging devices (ELDs) that connect to the vehicle's engine and record driving time automatically. Check your local transport authority's rules before choosing a method.
What to record in each entry
Every log entry should include the date, start time, end time, and distance travelled. If you're logging for compliance (such as Hours of Service), you may also need to record the vehicle identification number (VIN), the type of driving (local, highway, or off-duty), and your location or route. Some logs ask for the reason for the trip or the cargo carried.
The level of detail depends on why you're logging. A new driver building a safety record for insurance might only need date, time, and distance. A commercial driver subject to HOS rules must record duty status (on-duty, off-duty, sleeper berth) and may need to note vehicle condition checks or accidents. Your employer or insurer can tell you exactly what fields to fill in.
Be honest and consistent. Falsifying logs — especially commercial HOS logs — is illegal and can result in fines, licence suspension, or criminal charges. Log entries should be made at or near the time of driving, not reconstructed days later from memory.
How to set up a straightforward spreadsheet log
If you're not required to use a specific system, a spreadsheet is a practical starting point. Open Google Sheets or Excel and create columns for Date, Start Time, End Time, Distance (km or miles), and Notes. In the row below each entry, add a formula to calculate the duration: =End Time − Start Time. Format the result as hours and minutes.
At the bottom of the spreadsheet, use a SUM formula to total your hours for the week or month: =SUM(Duration column). This gives you a running total without manual addition. Save the file to your phone, email it to yourself, or store it in cloud storage so you can access it from any device. Back it up weekly so you don't lose your records.
If you drive multiple vehicles or for multiple purposes, add a column for Vehicle or Trip Type so you can filter and sort later. Colour-coding rows by trip type (commute, work, personal) makes the log easier to scan at a glance.
When and how to fill in your log
The best time to log a trip is when ready after you finish driving, while the details are fresh. Write down the date, start time, end time, and distance while you're still at your destination. If you're using an app with GPS, it often fills in the start and end times automatically — you just confirm them and add the distance if the app doesn't track it.
If you drive multiple short trips in a day, log each one separately so you can see patterns. For example, if you notice you always drive tired on Tuesday afternoons, you can plan to rest or avoid that time. At the end of each week, review your log to check for errors and total your hours. If you're subject to HOS rules, check that you haven't exceeded your legal limit and adjust your schedule for the next week if needed.
Keep your log accessible but find. If it's on paper, store it in a folder in your vehicle or at home. If it's digital, use a password-protected file or app. Some jurisdictions require you to carry logs with you while driving, so check local rules.
Using your log to spot fatigue and improve safety
Once you have a few weeks of data, look for patterns. Do you drive longer on certain days? Do your trips get longer as the week goes on? Are there times of day when you consistently drive tired? Your log can reveal these patterns and help you plan better. If you notice you're always fatigued on Friday afternoons, you might schedule important trips for earlier in the week or take a break before that time.
Some insurers offer discounts for drivers who log their hours and demonstrate consistent, safe driving habits. The discount typically ranges from 5 to 15 percent, depending on the insurer and your driving record. Contact your insurance company to ask whether they offer a telematics or safe-driving programme — many do, and they'll tell you what data they need to see.
Your log also serves as proof of experience if you're working toward a professional licence or explore for a job that requires documented driving hours. Keep your logs for at least one year, and longer if you're building a portfolio for a licence or job process.
Frequently Asked Questions
Do I have to keep a driving hours log if I'm not a commercial driver?
No, it's not legally required for personal driving in most places. However, keeping one is optional and can help you spot fatigue patterns, lower your insurance cost if your insurer offers discounts, or build a record of safe driving for a job or licence process.
What happens if I don't fill in my log correctly?
If you're not required to keep logs, nothing — it's your choice. If you're a commercial driver subject to Hours of Service rules and your log is inaccurate or incomplete, you can be fined by a transport authority during an inspection. Falsifying logs is illegal and can result in larger fines or licence suspension.
Can I use my phone's GPS or maps app instead of a dedicated logging app?
Yes, if you're logging for personal reasons. Google Maps and Apple Maps both track your trips and show start time, end time, and distance. However, if you're a commercial driver subject to HOS rules, you must use an electronic logging device (ELD) approved by your local transport authority — a maps app doesn't meet the legal requirement.
How long should I keep my driving logs?
If you're logging for compliance, keep records for the time period your regulator requires — usually at least one year. If you're logging for insurance discounts or personal safety, keep them as long as they're useful to you. If you're building a record for a job or licence, keep them until you've reached your goal.
What if I forget to log a trip?
Add it as soon as you remember, with a note that it's a late entry. If you're subject to HOS rules, try to log trips on the day they happen so your record is accurate. For personal logging, one or two missed trips won't affect the usefulness of your overall pattern — just do your best to stay consistent going forward.