Amazon.com: Electriduct 6 Feet Rubber Traffic Speed Bump with Asphalt Mounting Hardware Rebar Spikes - 72" Long, 2" Height Heavy Duty Modular Driveway Parking Lot - Black/Yellow - Pack of 2 : Industrial & Scientific
Traffic Spikes | Tire Spikes for Road | Coyote
Could traffic spikes cut down on wrong-way crashes? - YouTube
One Way Traffic Spikes and Motorized, for Parking Lots and Garages.
Traffic spikes in parking lots. Because just having a "Wrong Way" or an arrow that only goes one way would be waaayyy too much work. So instead, let's have it so if