Random Traffic Generator

Several die rolls on these table say reroll 6 and add five. If you roll a 6, you should reroll. If for example you roll a "4", you would add that to five for "9". If you roll a 6, you roll again, adding 5 each time. For example, you get "3d6 motorcycles, reroll any 6 and add 5". If you rolled 4, 6, and 6 you get 14 bikes plus two rerolls. Then you roll a 3 and a 6. That's eight more bikes and another reroll. You roll 6 again. Five more bikes and a reroll. Finally you roll a "4". That's 31 bikes roaring down the highway.

TRAFFIC CONDITIONS
Roll 1d6. +1 to +3 depending on weather conditions. +1 during regular traffic hours, +2 during rush hour. All rerolls cumulative.

1.     Wide open, hardly anyone on the road.
2.     Little traffic.
3.     Regular traffic, moving at speed limit.
4.     Dense traffic, a few congested spots.
5.     Road construction, roll again and add two.
6.     Accident ahead! Roll again and add two.
7.     Traffic slowed significantly. 3d20 MPH.
8.     Traffic at a standstill. 1d10 MPH.
9.     Traffic stopped for 2d6 minutes.
10+. Road closed due to conditions. Will reopen in 2d6 hours, reroll any 6 and add to 5.

RANDOM VEHICLE
2.     Van or minivan
3.     Motorcycle
4-5.  Pickup truck
6-7. Automobile
8.     SUV
9-10. Tractor trailer
11.   Delivery truck*
12.   Special, roll below

TRACTOR-TRAILER
Roll 2d6. For any marked with an (*), including the delivery truck above, roll 1d6. 5-6 carrying hazmat.
2.      Automobile hauler: 1d6, 1-2 empty, 3-4 2d6 one type random vehicle (roll 1d6+2 on table        above), 5-6 is carrying 1d6 of two types of random vehicle.
3-4.  Shipping container*
5-6.  Tanker truck: 3-6 hazmat
7-8.  Box truck*
9.     Flatbed*
10.   Deadhead, no trailer: 1 in 6 is towing 1 or 2 additional deadhead tractors.
11.   Tandem box truck*
12.   Other cargo: boat, RV, bridge strut, etc.

SPECIAL VEHICLE
Roll 1d20.
1.     Cross-country bus.
2.     Department  of Transportation vehicle. Roadside assistance or road hazard clearance.
3.     Fancy car: Roll 1d6, 1: hot sports car, 2: luxury roadster, 3-5: classic, 6: decorated ghetto sled
4.     Limousine
5.     3d6 motorcycles, reroll any 6 and add 5.
6.     Tow truck: roll 1d6, 3-6 is towing a random vehicle, 1-2 isn't.
7-8.  Ambulance: roll 1d6, 1-4 cruising, 5-6 lights and sirens.
9-11.Police Car: roll 1d6, any result of 5 or 6 it has lights and sirens on.
12.   Fire Truck: roll 1d6, 1-3 cruising, 4-6 lights and sirens.
13.   School bus: if after hours, roll 1d6. 1: privately owned, 2-3: school bus, 4+: medical van.
14.   Emergency! 1d6 (reroll 6 add 5)  emergency vehicles with lights and sirens blazing!
15.   Transit bus
16.   Funeral Procession: 1 hearse +3d6 (any 6 reroll and add 5) vehicles (roll 1d6 +2 on table above).
17.   Construction vehicle: includes cement mixers
18.   Agricultural vehicle
19.   Reroll on this table, there is 1d6 of this result. Referee may decide to reroll 6 and add 5.
20.   Highly unusual vehicle: Amish buggy, military APC, band on a bike, etc.