Junction Design
Here's a typical junction with a motorway/dual carriageway
in Finland.
It's like someone has read a manual on how NOT to design junctions
and implemented as many of the bad points as they can.
1) Almost 90 degree exit turn with short slip road. Great
for winter when it's -10 and the road is covered in ice.
2) Traffic lights on entry slip road. All the cars can queue
up at the traffic lights and then try to get on the motorway
all at once instead of gradually. For added effect some of the
drivers will be impatient and try to overtake the other cars
within 1 second of joining the motorway. **BONUS POINTS** have
roadworks starting 20m after the slip road, so the cars have
only a few metres to try and get onto the busy motorway.
3) Traffic lights on exit. This lets the cars queue up at
rush hours and hopefully back up onto the motorway to reduce
the speed there and give the chance of some rear end collisions.
**BONUS POINTS** place the traffic lights after a blind corner.
Then cars coming off the motorway can have two attempts at crashing.
**DOUBLE BONUS** try to 'fix' this bad junction by spending millions
on an extra exit-only lane on the motorway to handle the traffic
queues - queues that would never exist if the junction was designed
properly.
4) short entry slip road - this stops the cars getting to
the correct speed - although since "there are no other cars
on the road" there is no problem with them joining a busy
motorway at 40km/h. **BONUS POINTS** design the junction upside
down so cars joining have to drive UP the ramp which slows them
down and cars leaving have to drive DOWN the ramp which gives
them extra unwanted speed. |