3.0 - Always message the owner before impounding any Large, Aviation, Amphibious or Watercraft Vehicles to ensure that they don´t need it anymore.
3.1 - Illegal vehicles are not allowed to be impounded, driven or clamped for example: Ifrit, Hunter, Strider and Armed: Qilin's, 4WD's, Prowler's, OffRoad's. Unarmed variants of these vehicles are not illegal so can be impounded and clamped.
3.2 - All vehicles require a verbal call out. Example: Hello this is Highways Agency [NAME], could the owner of this black SUV make themselves known or else your vehicle will be impounded.
3.3 - Do not impound any vehicles that have been involved in a crime. Ask a Police Officer first.
3.3.1 - Do not get involved in vehicles from conflict or bank.
3.4 - Do not clamp vehicles in a dangerous position. Try to move them out of the way or impound them.
3.5 - Do not clamp any Aviation, Watercraft or Special Vehicle.
3.5.1 - Special Vehicles classify as MRAPS (Ifrit, Hunter, Strider) Armed - Qilin's, 4WD's, Prowler's, OffRoad's
3.6 - Always verify the registration of a vehicle before handing out the keys.
3.7 - Drive sensibly at all times and remember that your Emergency Lights (Shift+L) do not give you permission to exceed the speed limit. They are used to warn other road users of your presence.
3.8 - Any vehicle that you spawn is your responsibility and must not be left unattended.
3.9 - Do not Give/Sell any vehicle that you spawn or find. Your government issued vehicles do not belong to you and are not yours to hand out. Any vehicle that you find must be dealt with appropriately.
3.10 - When logging off make sure to Impound or Store your vehicle (you should only impound your vehicle if you are going to log of straight after).
3.11 - Orange vehicle markers: These let you know the locations of the cars that are tagged as In-active or abandoned and can potentially be impounded or clamped, as long as they are not involved in a conflict or a bank.
3.12 - Before you impound a car you must wait at least 30s and make a verbal callout.
3.13 - Before you impound a truck you must make a verbal callout, Wait at least 1 minute, and send an appropriate message to the owner.
3.14 - You must not under any circumstances impound a MRAP (Ifrit, Hunter, Strider) or any Armed vehicles.
3.15 - If a Van or Truck is within 300m of a Trader you must Picklock the vehicle and make sure that there is nothing inside before impounding it.
See image below: