Decison about taking a new job?

i have been at my current job for 10 years. its for a state highway department as an istant engineer. good job, good benefits, lots of time off, holidays, vacation time, work load is easy but the pay sucks.... im debating on taking a job for a railroad being a conductor/engineer. it would be an immediate increase in salary of $20,000 a year but i would be on call 24/7 365 days a year. so at my current job i am pretty much the highest i can get without 3 more years of schooling. so my raises are basically just cost of living and union raises. but if i took the new job at the railroad i would see that increase in salary immediately but never be home till i have 20 years of seniority to pick where and when i wanna work. also the fear of being laid off starting at the very bottom again at a new job. the new job would be on call and never a set schedule. im single, no kids, and 32 years old. but i am hungry for more money to live life a little better. i want a bigger garage to work in for my hobbies. i want to give back to my parents as they are retired so they can enjoy their retirement also..... so yeah just would like your input. thanks