$QoS$	Quality of service
C1, C2	Lagrangian optimization constraints
dVnVn+1	Distance between two successive vehicles in the road
PD	The transmission power of any interference device
PDmax	The maximum transmission power of any transmission device
PC	The transmission power of any interference cellular user’s equipment
PCmax	The maximum transmission power of any cellular user’s equipment
Pv	The transmission power of any vehicle
Pvi	The transmission power of any interference vehicle
Pvmax	The maximum transmission power of any vehicle
$h_{VnVn+1}$	Fading channel coefficient between any two successive vehicles
$h_{DVn+1}$	Fading channel coefficient between the interfering device and the receiving vehicle
$h_{CVn+1}$	Fading channel coefficient between the interfering CUE and the receiving vehicle
$h_{VVn+1}$	Fading channel coefficient between the interfering vehicle and the receiving vehicle
$P{L}_{DVn+1}$	Path loss between any interfering device and the receiving vehicle
$P{L}_{CVn+1}$	Path loss between any interfering CUE and receiving vehicle
$P{L}_{VVn+1}$	Path loss between any interfering vehicle and receiving vehicle
$P{L}_{VnVn+1}$	Path loss between any two V2V links
PDR	Packet delivery ratio
E2E	Average end-to-end delay
pout	System outage probability
poutmax	Maximum system outage probability
$SINR$	Signal-to-interference-plus-noise ratio
$SIN{R}_{th}$	Signal-to-interference-plus-noise ratio threshold
SINREVN	Signal-to-interference-plus-noise between the emergency vehicle and the nearest vehicle
poutEVN	Outage probability of the emergency vehicle and the nearest vehicle
dEVN	Distance between the emergency vehicle and the nearest vehicle
dEVmax	Maximum distance between the emergency vehicle and the nearest vehicle
$h$	Fading channel coefficient
$N$	Noise power spectral density
PS	Source transmission power
$\gamma$	Path loss between the source and destination
$P_E$	Emergency vehicle’s transmission power
$h_{EVN}$	Fading channel coefficient between the emergency vehicle and the nearest vehicle
$P{L}_{EVN}$	Path loss between the emergency vehicle and the nearest vehicle
$h_{DVN}$	Fading channel coefficient between the interfering device and the nearest vehicle
$P{L}_{DVN}$	Path loss between theinterfering device and the nearest vehicle
$h_{CVN}$	Fading channel coefficient between theinterfering CUE and the nearest vehicle
$P{L}_{CVN}$	Path loss between the interfering CUE and the nearest vehicle
$h_{VVN}$	Fading channel coefficient between the interfering vehicle and the nearest vehicle
$P{L}_{VVN}$	Path loss between the interfering vehicle and the nearest vehicle
poutEVN	Outage probability of the emergency vehicle and the nearest vehicle
poutli	Outage probability of all the communication links in the lane i
$pou{t}_{E2VN\to VNV1}$	Outage probability of the emergency vehicle and the nearest vehicle, and the nearest vehicle and the first vehicle in the traffic
$pou{t}_{liVnVn+1}$	Outage probability of all communicating V2V links in the lane i
$h_{VNV1}$	Fading channel coefficient between the nearest vehicle and the first receiving vehicle on the road
$P{L}_{VNV1}$	Path loss between the emergency vehicle and the nearest vehicle
$h_{DV1}$	Fading channel coefficient between the nearest vehicle and the first receiving vehicle on the road
$P{L}_{DV1}$	Path loss between the interfering device and first receiving vehicle on the road
$h_{CV1}$	Fading channel coefficient between the interfering CUE and the first receiving vehicle on the road
$P{L}_{CV1}$	Path loss between the interfering CUE and the first receiving vehicle on the road
$h_{VV1}$	Fading channel coefficient between the interfering vehicle and the first receiving vehicle on the road
$P{L}_{VV1}$	Path loss between the interfering vehicle and the first receiving vehicle on the road
$P{L}_O$	Path loss constant
$I$	Interference
n	Number of vehicles on the road
$D$	Road length
v	Vehicle velocity
VL	Vehicle length
λ, µ	Non-negative Lagrangian multipliers