If you own a commercial property of any sort, you may want to think about installing traffic lights and safety signage, and especially if you have delivery vehicles, heavy pedestrian traffic, or just large volumes of traffic in and out of the lot. Note why this is and where they might be installed around private property, so you ensure less traffic congestion and even increased safety for everyone on the lot itself.
If your lot is very busy and there is a public sidewalk that goes across the entryway, you might consider a pedestrian stop sign installed on the sidewalk itself. This will ensure someone on foot or on a bike actually stops and checks for oncoming cars and trucks, reducing their risk of being hit.
If your property has a walkway between two buildings that crosses a driveway or street, it's good to have pedestrian lights and added traffic signals installed. A simple yield sign or caution sign on the sidewalk may not be enough to stop pedestrians in their tracks, and a stop sign on the road may not keep vehicles stopped long enough for pedestrians to cross. Even a simple free-standing light on the corner can ensure that vehicle traffic slows or stops at the intersection if needed. This can also reduce the risk of a pedestrian being hit, and this type of light encourages pedestrians to cross at the crosswalk rather than in the middle of a street between buildings, increasing their safety.
When your building has a large number of delivery trucks that come in and out of the warehouse or production area, it can be helpful to have traffic lights directing them. These lights can be controlled manually by warehouse personnel, who can engage the green signal when they're ready for the next vehicle. This can ensure that trucks don't block one another as they enter the delivery area and there is less congestion along the docks.
If your property has security checkpoints, you may want vehicles to stop a certain distance behind the vehicle in front of them. This allows for room if the vehicle at the guard shack needs to back up, or if security vehicles need to get behind them. Traffic lights can also ensure that vehicles slow down before they reach this checkpoint, and that they stop at any designated space rather than coming right up behind the vehicle in front of them. These lights can also be controlled manually by a security guard, to help control the flow of traffic through these checkpoints.