Using your maps, try to determine that the route you plan to take is free of traffic and construction delays as this will decrease the amount of time needed to complete the call. Try to imagine the route you are taking and the bumps or hazards that may be in the road, this will create a smoother ride. This is especially important when operating a wheel lift as road bumps can cause the under body of the vehicle to slam against the wheel lift components. One wrong bump could damage an oil pan or exhaust parts.
It is important to be aware of the various places such as car dealerships and shops that have a gated lot. If you cannot get onto the property it is often frowned upon to leave a vehicle obstructing a gate or an entrance. It is a good idea as well to assume that the towing service could be considered liable for leaving a vehicle in what could be considered compromised environments. Theft or vandalism will require blame and you don't want that burden on you or your company. Use care as if you were leaving your own vehicle at these tow destinations.