You need to be more specific.
Are you counting vehicles going into and out of a parking lot, or just one way?
Do you need to distinguish between different types of vehicle?
What sensors will you use?
What display or other output device?
Does the circuit have to be weatherproof?
Mains or battery powered?
Does it need manual control or monitoring?
Do any parameters have to be stored long-term?
i need a car parking that counts the car going in and going out which uses a ldr as a switch or as a sensor and a stepper motor that is used to open and close the gate..pls give me a schematic diagram of this.........
materials;
74ls192 ic
74ls248 ic
LDR
stepper motor
ne555 ic
7 segment LED(cathode)