---
title: "Guides"
url: "https://dashcamforcars.com/blog/"
---

# Guides

- [How Many Cameras Does a Truck, Bus or Van Need?](https://dashcamforcars.com/how-many-cameras-does-a-truck-bus-or-van-need/): Vans and taxis need two cameras, trucks three or four and buses four to eight. Start from the views you would want after an incident.
- [ADAS, DMS and BSD Explained: What Each Fleet Camera Alert Does](https://dashcamforcars.com/adas-dms-bsd-explained-fleet-camera-alerts/): ADAS watches the road, DMS watches the driver and BSD watches the blind spot. Each needs its own camera, and our devices differ in the alerts they give.
- [JT/T 808 and JT/T 1078 Explained: Fleet Video Protocols](https://dashcamforcars.com/jt-t-808-and-jt-t-1078-explained/): JT/T 808 carries position, alarms and commands between a vehicle device and a platform. JT/T 1078 adds video. Check the edition and the server protocol first.
- [How Much 4G Data Does a Fleet Dashcam Use?](https://dashcamforcars.com/how-much-4g-data-does-a-fleet-dashcam-use/): Tracking uses about 17 MB a month and live video about 40 to 60 MB per camera-hour. Our worked example for one van comes to about 1.1 GB a month.
- [Dashcam vs MDVR: Which Does Your Fleet Need?](https://dashcamforcars.com/dashcam-vs-mdvr-which-does-your-fleet-need/): A dashcam is one windscreen unit with one or two lenses. An MDVR is a separate recorder for four or eight cameras. Choose by the views you need.
- [Does Tesla Have Built-in Dash Cams? Is an Additional One Worth It?](https://dashcamforcars.com/does-tesla-have-built-in-dash-cams-is-an-additional-one-worth-it/): Tesla's built-in dashcam keeps a rolling hour of video on a USB drive, with no audio. That suits a private owner; a fleet needs more history and one platform.
- [Benefits of a Dash Cam: Why Install One in Your Vehicle](https://dashcamforcars.com/benefits-of-dash-cam-why-to-install-a-dash-cam-in-your-vehicle/): A dashcam gives you video of what happened on the road. Six benefits for drivers and fleets, the drawbacks, and what to look for in a model.
- [Wired vs Wireless Dash Cams: Which One for a Fleet?](https://dashcamforcars.com/wired-vs-wireless-dash-cams-everything-you-need-to-know/): A wired dashcam keeps footage on its memory card. A wireless one adds Wi-Fi or 4G to get it off. A fleet that must see incidents as they happen needs 4G.
- [Does a Dash Cam Drain the Battery? Myths vs Facts](https://dashcamforcars.com/does-dash-cam-drain-battery-myths-vs-facts/): Our WD02 dashcam draws about 420 mA while recording and 6 mA in standby. When a dashcam drains a battery, and how a low-voltage cutoff prevents it.