A slip road or slip path is an imaginary road in a junction which allows people to quickly change directions without actually moving into an intersection. They’re main found at the junction of busy roads as access to a motorway and usually only offer a very limited number of alternatives for vehicles. As a result, drivers often take a single track approach, going in one direction and then turning left or right on the approach of other traffic. However, this often leads to dangerous situations where one driver could hit another, especially if they’re both going at high speeds.
In many planning games, players are given different scenarios in which they might find themselves in a slip road. The first scenario, shown below, shows a busy slip road in full view. The vehicles in the background include a bus, taxi, lorry and vans. The buses have blue triangular markings going left to right across the card spaces. The taxi has red rectangular marking with five yellow dots shown in the centre and two squares across the five horizontal marking.
The fifth vehicle is parked across the road from the bus, taxi and lorry. It has a green arrow showing through a hole in its panel. The player can see that the bus is trying to get onto the pavement where the taxis are waiting for a turn into the road. This can be very difficult because the buses are all going in the same direction, and as a result, the player will not know when it is safe to safely turn and come out of the roundabout.
Another example is shown below. This time, the bus has just pulled into a roundabout, while the lorry and taxi are making their way into the lane. The player can see that the taxi is going to make a turn into the middle of the motorway tunnel. The player’s manoeuvring must pay off when it notices that one of the vehicles is blocking the way. If the player does not notice this, they will end up having to pay a fine.
Another example is shown below. This time, the motorway is blocked. When the player looks at the top of the street, they see that the taxis have parked into the median strip. In order to pass through this space, the player must roll a six-sided die. When they roll a six, the cars on either side must stop and the spaces in the center of the street become filled in using the parking meters.
The parking meters are green arrow spaces. The actual board is a series of yellow rectangular shapes. The numbers on the actual board change as the rows of the grid change. They change from five to six, seven and eight when the dices get closer to one another.
To determine the number of spaces in the center of the grid that each vehicle can occupy, each dice roll must add together the total number of spaces in the row. For instance, if there are two vehicles in the first row, the dice roll reveals that there are five spaces in the second row, three spaces in the third and two spaces in the fourth. The player then rolls the dice and sees that one vehicle is still in the second row and the second vehicle has moved out of the third row. The player may then decide whether or not to place that vehicle in the third row, or to move it to the second slot. When the vehicle in the third slot rolls the dice, it stops and the dealer will tell the player what spaces remain.
There are many ways to play What is a Slip Road. It can be a simple game for two people where each person guides the dices toward an objective. Another version is more elaborate and requires that each player control a large group of vehicles and maneuver them through a maze, using the yellow line to guide the vehicles. The objective may be to drive all vehicles into the bank and stay in that spot until the end of the game. If any vehicles roll off the edge of the yellow line, the player must maneuver the vehicles back onto the straight line. For larger games, players can try to complete all the dices in the outer route, but if this is impossible, the last two dices in the center of the board are used.